./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.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 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 09:05:19,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 09:05:19,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 09:05:20,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 09:05:20,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 09:05:20,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 09:05:20,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 09:05:20,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 09:05:20,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 09:05:20,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 09:05:20,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 09:05:20,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 09:05:20,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 09:05:20,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 09:05:20,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 09:05:20,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 09:05:20,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 09:05:20,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 09:05:20,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 09:05:20,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 09:05:20,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 09:05:20,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 09:05:20,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 09:05:20,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 09:05:20,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 09:05:20,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 09:05:20,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 09:05:20,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 09:05:20,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 09:05:20,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 09:05:20,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 09:05:20,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 09:05:20,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 09:05:20,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 09:05:20,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 09:05:20,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 09:05:20,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 09:05:20,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 09:05:20,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 09:05:20,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 09:05:20,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 09:05:20,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 09:05:20,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 09:05:20,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 09:05:20,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 09:05:20,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 09:05:20,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 09:05:20,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 09:05:20,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 09:05:20,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 09:05:20,106 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 09:05:20,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 09:05:20,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 09:05:20,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 09:05:20,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 09:05:20,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 09:05:20,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 09:05:20,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 09:05:20,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 09:05:20,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 09:05:20,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 09:05:20,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 09:05:20,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 09:05:20,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 09:05:20,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 09:05:20,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 09:05:20,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 09:05:20,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 09:05:20,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 09:05:20,110 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 09:05:20,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 09:05:20,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 09:05:20,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 09:05:20,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 [2021-12-18 09:05:20,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 09:05:20,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 09:05:20,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 09:05:20,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 09:05:20,285 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 09:05:20,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-12-18 09:05:20,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a832301a/9df355eba0e64f028e08e588bdfd624a/FLAG3b725d2d3 [2021-12-18 09:05:20,889 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 09:05:20,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-12-18 09:05:20,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a832301a/9df355eba0e64f028e08e588bdfd624a/FLAG3b725d2d3 [2021-12-18 09:05:21,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a832301a/9df355eba0e64f028e08e588bdfd624a [2021-12-18 09:05:21,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 09:05:21,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 09:05:21,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 09:05:21,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 09:05:21,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 09:05:21,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:05:21" (1/1) ... [2021-12-18 09:05:21,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c211d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:21, skipping insertion in model container [2021-12-18 09:05:21,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:05:21" (1/1) ... [2021-12-18 09:05:21,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 09:05:21,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 09:05:22,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2021-12-18 09:05:22,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 09:05:22,268 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 09:05:22,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2021-12-18 09:05:22,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 09:05:22,445 INFO L208 MainTranslator]: Completed translation [2021-12-18 09:05:22,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22 WrapperNode [2021-12-18 09:05:22,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 09:05:22,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 09:05:22,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 09:05:22,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 09:05:22,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,566 INFO L137 Inliner]: procedures = 147, calls = 851, calls flagged for inlining = 60, calls inlined = 58, statements flattened = 2024 [2021-12-18 09:05:22,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 09:05:22,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 09:05:22,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 09:05:22,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 09:05:22,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 09:05:22,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 09:05:22,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 09:05:22,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 09:05:22,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (1/1) ... [2021-12-18 09:05:22,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 09:05:22,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:22,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 09:05:22,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 09:05:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 09:05:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-18 09:05:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-18 09:05:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-18 09:05:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 09:05:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 09:05:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 09:05:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 09:05:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 09:05:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 09:05:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 09:05:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 09:05:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 09:05:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 09:05:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 09:05:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_data [2021-12-18 09:05:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_data [2021-12-18 09:05:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure blk_put_request [2021-12-18 09:05:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_put_request [2021-12-18 09:05:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-18 09:05:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-18 09:05:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 09:05:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 09:05:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 09:05:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 09:05:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 09:05:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure send_mode_select [2021-12-18 09:05:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure send_mode_select [2021-12-18 09:05:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-18 09:05:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-18 09:05:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 09:05:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 09:05:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 09:05:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 09:05:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 09:05:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 09:05:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 09:05:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 09:05:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 09:05:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 09:05:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 09:05:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unregister_device_handler [2021-12-18 09:05:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unregister_device_handler [2021-12-18 09:05:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-18 09:05:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-18 09:05:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-18 09:05:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-18 09:05:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 09:05:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure submit_inquiry [2021-12-18 09:05:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_inquiry [2021-12-18 09:05:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_detach [2021-12-18 09:05:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_detach [2021-12-18 09:05:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 09:05:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 09:05:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_match [2021-12-18 09:05:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_match [2021-12-18 09:05:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 09:05:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 09:05:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-18 09:05:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2021-12-18 09:05:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2021-12-18 09:05:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 09:05:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 09:05:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 09:05:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-18 09:05:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-18 09:05:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-18 09:05:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-18 09:05:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-18 09:05:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure check_ownership [2021-12-18 09:05:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ownership [2021-12-18 09:05:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-18 09:05:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-18 09:05:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 09:05:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 09:05:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_req [2021-12-18 09:05:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_req [2021-12-18 09:05:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 09:05:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 09:05:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-18 09:05:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-18 09:05:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-18 09:05:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-18 09:05:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 09:05:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 09:05:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-18 09:05:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-18 09:05:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 09:05:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 09:05:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 09:05:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-18 09:05:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-18 09:05:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 09:05:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 09:05:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 09:05:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 09:05:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 09:05:23,110 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 09:05:23,112 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 09:05:23,390 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 09:05:24,185 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 09:05:24,198 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 09:05:24,198 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 09:05:24,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:05:24 BoogieIcfgContainer [2021-12-18 09:05:24,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 09:05:24,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 09:05:24,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 09:05:24,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 09:05:24,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:05:21" (1/3) ... [2021-12-18 09:05:24,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4726989a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:05:24, skipping insertion in model container [2021-12-18 09:05:24,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:05:22" (2/3) ... [2021-12-18 09:05:24,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4726989a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:05:24, skipping insertion in model container [2021-12-18 09:05:24,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:05:24" (3/3) ... [2021-12-18 09:05:24,208 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-12-18 09:05:24,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 09:05:24,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 09:05:24,259 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 09:05:24,265 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 09:05:24,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 09:05:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 591 states, 436 states have (on average 1.3944954128440368) internal successors, (608), 456 states have internal predecessors, (608), 115 states have call successors, (115), 39 states have call predecessors, (115), 38 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2021-12-18 09:05:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-18 09:05:24,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:24,300 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:24,300 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 108901425, now seen corresponding path program 1 times [2021-12-18 09:05:24,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:24,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419903070] [2021-12-18 09:05:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:24,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 09:05:24,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:24,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419903070] [2021-12-18 09:05:24,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419903070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:24,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:05:24,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 09:05:24,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054137547] [2021-12-18 09:05:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:24,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 09:05:24,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 09:05:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 09:05:24,778 INFO L87 Difference]: Start difference. First operand has 591 states, 436 states have (on average 1.3944954128440368) internal successors, (608), 456 states have internal predecessors, (608), 115 states have call successors, (115), 39 states have call predecessors, (115), 38 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 09:05:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:25,550 INFO L93 Difference]: Finished difference Result 1251 states and 1835 transitions. [2021-12-18 09:05:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 09:05:25,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2021-12-18 09:05:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:25,563 INFO L225 Difference]: With dead ends: 1251 [2021-12-18 09:05:25,563 INFO L226 Difference]: Without dead ends: 646 [2021-12-18 09:05:25,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 09:05:25,571 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 525 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:25,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 1214 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 09:05:25,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-12-18 09:05:25,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 572. [2021-12-18 09:05:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 425 states have (on average 1.3858823529411766) internal successors, (589), 439 states have internal predecessors, (589), 109 states have call successors, (109), 38 states have call predecessors, (109), 37 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-18 09:05:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 806 transitions. [2021-12-18 09:05:25,641 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 806 transitions. Word has length 73 [2021-12-18 09:05:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:25,642 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 806 transitions. [2021-12-18 09:05:25,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 09:05:25,643 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 806 transitions. [2021-12-18 09:05:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-18 09:05:25,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:25,658 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:25,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 09:05:25,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:25,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1555888661, now seen corresponding path program 1 times [2021-12-18 09:05:25,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:25,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648050299] [2021-12-18 09:05:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:25,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 09:05:25,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:25,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648050299] [2021-12-18 09:05:25,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648050299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:25,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:05:25,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 09:05:25,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990230257] [2021-12-18 09:05:25,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:25,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 09:05:25,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:25,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 09:05:25,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 09:05:25,861 INFO L87 Difference]: Start difference. First operand 572 states and 806 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 09:05:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:27,109 INFO L93 Difference]: Finished difference Result 1439 states and 2028 transitions. [2021-12-18 09:05:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 09:05:27,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2021-12-18 09:05:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:27,114 INFO L225 Difference]: With dead ends: 1439 [2021-12-18 09:05:27,115 INFO L226 Difference]: Without dead ends: 880 [2021-12-18 09:05:27,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 09:05:27,118 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 727 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:27,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 2226 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 09:05:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-12-18 09:05:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 780. [2021-12-18 09:05:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 584 states have (on average 1.3715753424657535) internal successors, (801), 600 states have internal predecessors, (801), 139 states have call successors, (139), 57 states have call predecessors, (139), 56 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2021-12-18 09:05:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1078 transitions. [2021-12-18 09:05:27,164 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1078 transitions. Word has length 73 [2021-12-18 09:05:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:27,164 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1078 transitions. [2021-12-18 09:05:27,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 09:05:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1078 transitions. [2021-12-18 09:05:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-18 09:05:27,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:27,170 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-18 09:05:27,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 09:05:27,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1054445077, now seen corresponding path program 1 times [2021-12-18 09:05:27,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:27,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998761855] [2021-12-18 09:05:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:27,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 09:05:27,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:27,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998761855] [2021-12-18 09:05:27,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998761855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:27,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:05:27,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 09:05:27,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332849351] [2021-12-18 09:05:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:27,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 09:05:27,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 09:05:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 09:05:27,392 INFO L87 Difference]: Start difference. First operand 780 states and 1078 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 09:05:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:28,509 INFO L93 Difference]: Finished difference Result 1634 states and 2286 transitions. [2021-12-18 09:05:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 09:05:28,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2021-12-18 09:05:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:28,515 INFO L225 Difference]: With dead ends: 1634 [2021-12-18 09:05:28,515 INFO L226 Difference]: Without dead ends: 875 [2021-12-18 09:05:28,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-18 09:05:28,519 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 338 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:28,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2561 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 09:05:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-12-18 09:05:28,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 780. [2021-12-18 09:05:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 584 states have (on average 1.3681506849315068) internal successors, (799), 600 states have internal predecessors, (799), 139 states have call successors, (139), 57 states have call predecessors, (139), 56 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2021-12-18 09:05:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1076 transitions. [2021-12-18 09:05:28,552 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1076 transitions. Word has length 106 [2021-12-18 09:05:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:28,554 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1076 transitions. [2021-12-18 09:05:28,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 09:05:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1076 transitions. [2021-12-18 09:05:28,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-18 09:05:28,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:28,560 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-18 09:05:28,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 09:05:28,560 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:28,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2075513431, now seen corresponding path program 1 times [2021-12-18 09:05:28,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:28,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902289172] [2021-12-18 09:05:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:28,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-18 09:05:28,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:28,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902289172] [2021-12-18 09:05:28,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902289172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:28,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:05:28,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 09:05:28,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102150663] [2021-12-18 09:05:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:28,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 09:05:28,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:28,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 09:05:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 09:05:28,748 INFO L87 Difference]: Start difference. First operand 780 states and 1076 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 09:05:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:29,908 INFO L93 Difference]: Finished difference Result 985 states and 1370 transitions. [2021-12-18 09:05:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 09:05:29,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 106 [2021-12-18 09:05:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:29,914 INFO L225 Difference]: With dead ends: 985 [2021-12-18 09:05:29,915 INFO L226 Difference]: Without dead ends: 982 [2021-12-18 09:05:29,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 09:05:29,920 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 1035 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:29,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1080 Valid, 2108 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 09:05:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-12-18 09:05:29,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 868. [2021-12-18 09:05:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 637 states have (on average 1.3626373626373627) internal successors, (868), 665 states have internal predecessors, (868), 159 states have call successors, (159), 72 states have call predecessors, (159), 71 states have return successors, (171), 152 states have call predecessors, (171), 158 states have call successors, (171) [2021-12-18 09:05:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1198 transitions. [2021-12-18 09:05:29,951 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1198 transitions. Word has length 106 [2021-12-18 09:05:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:29,952 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1198 transitions. [2021-12-18 09:05:29,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 09:05:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1198 transitions. [2021-12-18 09:05:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-18 09:05:29,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:29,955 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:29,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 09:05:29,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2011448509, now seen corresponding path program 1 times [2021-12-18 09:05:29,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:29,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968367208] [2021-12-18 09:05:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:29,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 09:05:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-18 09:05:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-18 09:05:30,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:30,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968367208] [2021-12-18 09:05:30,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968367208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:30,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:05:30,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 09:05:30,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271827269] [2021-12-18 09:05:30,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:30,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 09:05:30,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 09:05:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-18 09:05:30,276 INFO L87 Difference]: Start difference. First operand 868 states and 1198 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:05:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:32,315 INFO L93 Difference]: Finished difference Result 2793 states and 4095 transitions. [2021-12-18 09:05:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 09:05:32,315 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 195 [2021-12-18 09:05:32,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:32,327 INFO L225 Difference]: With dead ends: 2793 [2021-12-18 09:05:32,327 INFO L226 Difference]: Without dead ends: 1948 [2021-12-18 09:05:32,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-12-18 09:05:32,332 INFO L933 BasicCegarLoop]: 1160 mSDtfsCounter, 2056 mSDsluCounter, 5225 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 6385 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:32,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2119 Valid, 6385 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-18 09:05:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2021-12-18 09:05:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 871. [2021-12-18 09:05:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 640 states have (on average 1.3609375) internal successors, (871), 668 states have internal predecessors, (871), 159 states have call successors, (159), 72 states have call predecessors, (159), 71 states have return successors, (171), 152 states have call predecessors, (171), 158 states have call successors, (171) [2021-12-18 09:05:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1201 transitions. [2021-12-18 09:05:32,383 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1201 transitions. Word has length 195 [2021-12-18 09:05:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:32,384 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 1201 transitions. [2021-12-18 09:05:32,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:05:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1201 transitions. [2021-12-18 09:05:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-18 09:05:32,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:32,390 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:32,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 09:05:32,391 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:32,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1751441722, now seen corresponding path program 1 times [2021-12-18 09:05:32,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:32,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900011046] [2021-12-18 09:05:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:32,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 09:05:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 09:05:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 09:05:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 09:05:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-18 09:05:32,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:32,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900011046] [2021-12-18 09:05:32,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900011046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:32,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150587922] [2021-12-18 09:05:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:32,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:32,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:32,723 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) [2021-12-18 09:05:32,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 09:05:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 09:05:33,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-18 09:05:33,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:05:33,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150587922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:33,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:05:33,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-18 09:05:33,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431716536] [2021-12-18 09:05:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:33,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 09:05:33,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 09:05:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-18 09:05:33,531 INFO L87 Difference]: Start difference. First operand 871 states and 1201 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 09:05:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:33,558 INFO L93 Difference]: Finished difference Result 1721 states and 2378 transitions. [2021-12-18 09:05:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 09:05:33,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 216 [2021-12-18 09:05:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:33,563 INFO L225 Difference]: With dead ends: 1721 [2021-12-18 09:05:33,563 INFO L226 Difference]: Without dead ends: 873 [2021-12-18 09:05:33,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-18 09:05:33,566 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 1 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:33,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1603 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 09:05:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-12-18 09:05:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 872. [2021-12-18 09:05:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 641 states have (on average 1.360374414976599) internal successors, (872), 669 states have internal predecessors, (872), 159 states have call successors, (159), 72 states have call predecessors, (159), 71 states have return successors, (171), 152 states have call predecessors, (171), 158 states have call successors, (171) [2021-12-18 09:05:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1202 transitions. [2021-12-18 09:05:33,589 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1202 transitions. Word has length 216 [2021-12-18 09:05:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:33,589 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1202 transitions. [2021-12-18 09:05:33,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 09:05:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1202 transitions. [2021-12-18 09:05:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-18 09:05:33,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:33,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:33,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:33,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-18 09:05:33,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash 732712778, now seen corresponding path program 1 times [2021-12-18 09:05:33,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:33,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441292356] [2021-12-18 09:05:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:33,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 09:05:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 09:05:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 09:05:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 09:05:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-18 09:05:34,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:34,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441292356] [2021-12-18 09:05:34,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441292356] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:34,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587540072] [2021-12-18 09:05:34,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:34,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:34,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:34,088 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) [2021-12-18 09:05:34,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 09:05:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:34,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 09:05:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-18 09:05:34,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:05:34,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587540072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:34,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:05:34,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-18 09:05:34,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877360051] [2021-12-18 09:05:34,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:34,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 09:05:34,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 09:05:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-18 09:05:34,847 INFO L87 Difference]: Start difference. First operand 872 states and 1202 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 09:05:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:34,891 INFO L93 Difference]: Finished difference Result 1725 states and 2384 transitions. [2021-12-18 09:05:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 09:05:34,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 218 [2021-12-18 09:05:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:34,896 INFO L225 Difference]: With dead ends: 1725 [2021-12-18 09:05:34,896 INFO L226 Difference]: Without dead ends: 876 [2021-12-18 09:05:34,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-18 09:05:34,899 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 3 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:34,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2399 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 09:05:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-12-18 09:05:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 875. [2021-12-18 09:05:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 644 states have (on average 1.358695652173913) internal successors, (875), 672 states have internal predecessors, (875), 159 states have call successors, (159), 72 states have call predecessors, (159), 71 states have return successors, (171), 152 states have call predecessors, (171), 158 states have call successors, (171) [2021-12-18 09:05:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1205 transitions. [2021-12-18 09:05:34,923 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1205 transitions. Word has length 218 [2021-12-18 09:05:34,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:34,923 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1205 transitions. [2021-12-18 09:05:34,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 09:05:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1205 transitions. [2021-12-18 09:05:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-18 09:05:34,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:34,927 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:34,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:35,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-18 09:05:35,135 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash 240086604, now seen corresponding path program 1 times [2021-12-18 09:05:35,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:35,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780334626] [2021-12-18 09:05:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:35,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 09:05:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 09:05:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 09:05:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 09:05:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-18 09:05:35,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:35,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780334626] [2021-12-18 09:05:35,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780334626] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:35,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407260862] [2021-12-18 09:05:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:35,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:35,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:35,373 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) [2021-12-18 09:05:35,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 09:05:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:35,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 09:05:35,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-18 09:05:36,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:05:36,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407260862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:36,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:05:36,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-18 09:05:36,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845278055] [2021-12-18 09:05:36,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:36,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 09:05:36,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:36,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 09:05:36,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-18 09:05:36,119 INFO L87 Difference]: Start difference. First operand 875 states and 1205 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 09:05:36,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:36,160 INFO L93 Difference]: Finished difference Result 1733 states and 2390 transitions. [2021-12-18 09:05:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 09:05:36,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 218 [2021-12-18 09:05:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:36,164 INFO L225 Difference]: With dead ends: 1733 [2021-12-18 09:05:36,164 INFO L226 Difference]: Without dead ends: 881 [2021-12-18 09:05:36,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-18 09:05:36,168 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 9 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:36,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2397 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 09:05:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-12-18 09:05:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 877. [2021-12-18 09:05:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 646 states have (on average 1.3575851393188854) internal successors, (877), 674 states have internal predecessors, (877), 159 states have call successors, (159), 72 states have call predecessors, (159), 71 states have return successors, (171), 152 states have call predecessors, (171), 158 states have call successors, (171) [2021-12-18 09:05:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1207 transitions. [2021-12-18 09:05:36,194 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1207 transitions. Word has length 218 [2021-12-18 09:05:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:36,194 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1207 transitions. [2021-12-18 09:05:36,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 09:05:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1207 transitions. [2021-12-18 09:05:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-18 09:05:36,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:36,198 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:36,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:36,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:36,407 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:36,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:36,408 INFO L85 PathProgramCache]: Analyzing trace with hash -727264050, now seen corresponding path program 1 times [2021-12-18 09:05:36,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:36,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011716490] [2021-12-18 09:05:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:36,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 09:05:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 09:05:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 09:05:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 09:05:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-18 09:05:36,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:36,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011716490] [2021-12-18 09:05:36,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011716490] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:36,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512922804] [2021-12-18 09:05:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:36,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:36,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:36,662 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) [2021-12-18 09:05:36,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 09:05:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 09:05:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-18 09:05:37,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:05:37,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512922804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:37,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:05:37,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-12-18 09:05:37,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186541849] [2021-12-18 09:05:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:37,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 09:05:37,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:37,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 09:05:37,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-18 09:05:37,482 INFO L87 Difference]: Start difference. First operand 877 states and 1207 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 09:05:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:37,544 INFO L93 Difference]: Finished difference Result 1933 states and 2708 transitions. [2021-12-18 09:05:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 09:05:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 218 [2021-12-18 09:05:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:37,550 INFO L225 Difference]: With dead ends: 1933 [2021-12-18 09:05:37,550 INFO L226 Difference]: Without dead ends: 1079 [2021-12-18 09:05:37,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-12-18 09:05:37,554 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 197 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:37,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 4970 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 09:05:37,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-12-18 09:05:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 882. [2021-12-18 09:05:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 650 states have (on average 1.3553846153846154) internal successors, (881), 677 states have internal predecessors, (881), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2021-12-18 09:05:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1215 transitions. [2021-12-18 09:05:37,578 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1215 transitions. Word has length 218 [2021-12-18 09:05:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:37,579 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1215 transitions. [2021-12-18 09:05:37,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 09:05:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1215 transitions. [2021-12-18 09:05:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-18 09:05:37,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:37,583 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:37,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:37,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:37,803 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:37,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1901057434, now seen corresponding path program 1 times [2021-12-18 09:05:37,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:37,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969712555] [2021-12-18 09:05:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:37,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:37,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 09:05:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 09:05:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 09:05:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 09:05:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-18 09:05:38,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:38,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969712555] [2021-12-18 09:05:38,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969712555] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:38,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852185678] [2021-12-18 09:05:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:38,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:38,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:38,096 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) [2021-12-18 09:05:38,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 09:05:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:38,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 09:05:38,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-18 09:05:38,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:05:38,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852185678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:38,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:05:38,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-12-18 09:05:38,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479201553] [2021-12-18 09:05:38,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:38,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 09:05:38,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 09:05:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-18 09:05:38,890 INFO L87 Difference]: Start difference. First operand 882 states and 1215 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-18 09:05:38,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:38,939 INFO L93 Difference]: Finished difference Result 1944 states and 2726 transitions. [2021-12-18 09:05:38,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 09:05:38,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 234 [2021-12-18 09:05:38,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:38,947 INFO L225 Difference]: With dead ends: 1944 [2021-12-18 09:05:38,947 INFO L226 Difference]: Without dead ends: 1085 [2021-12-18 09:05:38,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-12-18 09:05:38,950 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 199 mSDsluCounter, 3933 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 4974 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:38,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 4974 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 09:05:38,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-12-18 09:05:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 883. [2021-12-18 09:05:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 650 states have (on average 1.3553846153846154) internal successors, (881), 678 states have internal predecessors, (881), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 154 states have call predecessors, (176), 159 states have call successors, (176) [2021-12-18 09:05:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1217 transitions. [2021-12-18 09:05:38,977 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1217 transitions. Word has length 234 [2021-12-18 09:05:38,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:38,977 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1217 transitions. [2021-12-18 09:05:38,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-18 09:05:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1217 transitions. [2021-12-18 09:05:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-18 09:05:38,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:38,983 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:39,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:39,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-18 09:05:39,199 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash -827151912, now seen corresponding path program 1 times [2021-12-18 09:05:39,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:39,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841257050] [2021-12-18 09:05:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:39,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 09:05:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 09:05:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 09:05:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 09:05:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-18 09:05:39,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:39,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841257050] [2021-12-18 09:05:39,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841257050] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:39,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009257013] [2021-12-18 09:05:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:39,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:39,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:39,471 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) [2021-12-18 09:05:39,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 09:05:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:40,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 09:05:40,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-18 09:05:40,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 09:05:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-18 09:05:40,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009257013] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 09:05:40,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 09:05:40,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 13 [2021-12-18 09:05:40,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846452461] [2021-12-18 09:05:40,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 09:05:40,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 09:05:40,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 09:05:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-18 09:05:40,621 INFO L87 Difference]: Start difference. First operand 883 states and 1217 transitions. Second operand has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 09:05:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:42,407 INFO L93 Difference]: Finished difference Result 1882 states and 2620 transitions. [2021-12-18 09:05:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 09:05:42,408 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 234 [2021-12-18 09:05:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:42,412 INFO L225 Difference]: With dead ends: 1882 [2021-12-18 09:05:42,413 INFO L226 Difference]: Without dead ends: 1022 [2021-12-18 09:05:42,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-12-18 09:05:42,416 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 773 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:42,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 5155 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-18 09:05:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-12-18 09:05:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 889. [2021-12-18 09:05:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 656 states have (on average 1.3521341463414633) internal successors, (887), 684 states have internal predecessors, (887), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 154 states have call predecessors, (176), 159 states have call successors, (176) [2021-12-18 09:05:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1223 transitions. [2021-12-18 09:05:42,438 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1223 transitions. Word has length 234 [2021-12-18 09:05:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:42,439 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1223 transitions. [2021-12-18 09:05:42,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 09:05:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1223 transitions. [2021-12-18 09:05:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-18 09:05:42,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:42,462 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:42,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:42,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:42,675 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash -744213788, now seen corresponding path program 2 times [2021-12-18 09:05:42,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:42,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520456140] [2021-12-18 09:05:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:42,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 09:05:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 09:05:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 09:05:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-18 09:05:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 09:05:43,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:43,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520456140] [2021-12-18 09:05:43,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520456140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:43,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:05:43,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 09:05:43,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930539713] [2021-12-18 09:05:43,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:43,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 09:05:43,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:43,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 09:05:43,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-18 09:05:43,026 INFO L87 Difference]: Start difference. First operand 889 states and 1223 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 09:05:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:45,015 INFO L93 Difference]: Finished difference Result 2145 states and 3048 transitions. [2021-12-18 09:05:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 09:05:45,015 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 240 [2021-12-18 09:05:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:45,021 INFO L225 Difference]: With dead ends: 2145 [2021-12-18 09:05:45,021 INFO L226 Difference]: Without dead ends: 1279 [2021-12-18 09:05:45,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-18 09:05:45,026 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 865 mSDsluCounter, 5755 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 6795 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:45,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 6795 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-18 09:05:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-12-18 09:05:45,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 894. [2021-12-18 09:05:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 660 states have (on average 1.35) internal successors, (891), 687 states have internal predecessors, (891), 160 states have call successors, (160), 72 states have call predecessors, (160), 73 states have return successors, (180), 155 states have call predecessors, (180), 159 states have call successors, (180) [2021-12-18 09:05:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1231 transitions. [2021-12-18 09:05:45,061 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1231 transitions. Word has length 240 [2021-12-18 09:05:45,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:45,061 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1231 transitions. [2021-12-18 09:05:45,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 09:05:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1231 transitions. [2021-12-18 09:05:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-18 09:05:45,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:45,067 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:45,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 09:05:45,067 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2137805464, now seen corresponding path program 1 times [2021-12-18 09:05:45,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:45,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166961438] [2021-12-18 09:05:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:45,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 09:05:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 09:05:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 09:05:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 09:05:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-18 09:05:45,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:45,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166961438] [2021-12-18 09:05:45,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166961438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:45,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:05:45,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 09:05:45,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854634915] [2021-12-18 09:05:45,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:45,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 09:05:45,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 09:05:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-18 09:05:45,411 INFO L87 Difference]: Start difference. First operand 894 states and 1231 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 09:05:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:47,502 INFO L93 Difference]: Finished difference Result 2151 states and 3056 transitions. [2021-12-18 09:05:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 09:05:47,503 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 256 [2021-12-18 09:05:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:47,511 INFO L225 Difference]: With dead ends: 2151 [2021-12-18 09:05:47,511 INFO L226 Difference]: Without dead ends: 1280 [2021-12-18 09:05:47,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-12-18 09:05:47,515 INFO L933 BasicCegarLoop]: 1070 mSDtfsCounter, 1005 mSDsluCounter, 6456 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 7526 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:47,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 7526 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-18 09:05:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-12-18 09:05:47,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 891. [2021-12-18 09:05:47,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 658 states have (on average 1.351063829787234) internal successors, (889), 685 states have internal predecessors, (889), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 155 states have call predecessors, (176), 159 states have call successors, (176) [2021-12-18 09:05:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1225 transitions. [2021-12-18 09:05:47,542 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1225 transitions. Word has length 256 [2021-12-18 09:05:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:47,543 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 1225 transitions. [2021-12-18 09:05:47,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 09:05:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1225 transitions. [2021-12-18 09:05:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-18 09:05:47,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:47,548 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:47,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 09:05:47,548 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2016613222, now seen corresponding path program 1 times [2021-12-18 09:05:47,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:47,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465783936] [2021-12-18 09:05:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:47,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 09:05:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 09:05:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 09:05:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 09:05:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 09:05:47,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:47,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465783936] [2021-12-18 09:05:47,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465783936] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:47,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395450714] [2021-12-18 09:05:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:47,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:47,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:47,894 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) [2021-12-18 09:05:47,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 09:05:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:48,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 09:05:48,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 62 proven. 16 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 09:05:48,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 09:05:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 09:05:49,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395450714] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 09:05:49,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 09:05:49,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 19 [2021-12-18 09:05:49,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465261893] [2021-12-18 09:05:49,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 09:05:49,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 09:05:49,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 09:05:49,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-12-18 09:05:49,311 INFO L87 Difference]: Start difference. First operand 891 states and 1225 transitions. Second operand has 19 states, 19 states have (on average 9.421052631578947) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 09:05:51,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:51,324 INFO L93 Difference]: Finished difference Result 1904 states and 2645 transitions. [2021-12-18 09:05:51,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 09:05:51,325 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.421052631578947) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 256 [2021-12-18 09:05:51,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:51,329 INFO L225 Difference]: With dead ends: 1904 [2021-12-18 09:05:51,329 INFO L226 Difference]: Without dead ends: 1036 [2021-12-18 09:05:51,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-12-18 09:05:51,333 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 625 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 5427 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:51,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 5427 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-18 09:05:51,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-12-18 09:05:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 903. [2021-12-18 09:05:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 670 states have (on average 1.344776119402985) internal successors, (901), 697 states have internal predecessors, (901), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 155 states have call predecessors, (176), 159 states have call successors, (176) [2021-12-18 09:05:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1237 transitions. [2021-12-18 09:05:51,361 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1237 transitions. Word has length 256 [2021-12-18 09:05:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:51,361 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1237 transitions. [2021-12-18 09:05:51,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.421052631578947) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 09:05:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1237 transitions. [2021-12-18 09:05:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-18 09:05:51,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:51,368 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:51,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:51,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:51,590 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1446141006, now seen corresponding path program 2 times [2021-12-18 09:05:51,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:51,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527194782] [2021-12-18 09:05:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:51,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 09:05:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 09:05:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 09:05:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 09:05:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 09:05:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-18 09:05:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 09:05:52,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527194782] [2021-12-18 09:05:52,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527194782] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663402104] [2021-12-18 09:05:52,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 09:05:52,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:52,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:52,072 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) [2021-12-18 09:05:52,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 09:05:52,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 09:05:52,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 09:05:52,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 09:05:52,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-12-18 09:05:52,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:05:52,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663402104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:05:52,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:05:52,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [19] total 22 [2021-12-18 09:05:52,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805262534] [2021-12-18 09:05:52,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:05:52,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 09:05:52,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:52,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 09:05:52,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-12-18 09:05:52,921 INFO L87 Difference]: Start difference. First operand 903 states and 1237 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 09:05:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:52,991 INFO L93 Difference]: Finished difference Result 1789 states and 2453 transitions. [2021-12-18 09:05:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 09:05:52,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 268 [2021-12-18 09:05:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:52,995 INFO L225 Difference]: With dead ends: 1789 [2021-12-18 09:05:52,995 INFO L226 Difference]: Without dead ends: 897 [2021-12-18 09:05:52,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-12-18 09:05:52,998 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 3 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:52,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3204 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 09:05:52,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-18 09:05:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-18 09:05:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 666 states have (on average 1.3408408408408408) internal successors, (893), 693 states have internal predecessors, (893), 159 states have call successors, (159), 71 states have call predecessors, (159), 71 states have return successors, (175), 154 states have call predecessors, (175), 158 states have call successors, (175) [2021-12-18 09:05:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1227 transitions. [2021-12-18 09:05:53,022 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1227 transitions. Word has length 268 [2021-12-18 09:05:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:53,022 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1227 transitions. [2021-12-18 09:05:53,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 09:05:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1227 transitions. [2021-12-18 09:05:53,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-18 09:05:53,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:53,027 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:53,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:53,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 09:05:53,235 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash 589758580, now seen corresponding path program 1 times [2021-12-18 09:05:53,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:53,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906678859] [2021-12-18 09:05:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:53,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 09:05:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:05:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 09:05:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 09:05:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-18 09:05:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-18 09:05:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 09:05:53,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:53,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906678859] [2021-12-18 09:05:53,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906678859] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:53,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483802276] [2021-12-18 09:05:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:53,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:53,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:53,687 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) [2021-12-18 09:05:53,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 09:05:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:54,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 3188 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 09:05:54,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 62 proven. 100 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 09:05:54,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 09:05:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 09:05:55,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483802276] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 09:05:55,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 09:05:55,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 31 [2021-12-18 09:05:55,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404387175] [2021-12-18 09:05:55,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 09:05:55,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-18 09:05:55,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-18 09:05:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2021-12-18 09:05:55,221 INFO L87 Difference]: Start difference. First operand 897 states and 1227 transitions. Second operand has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 09:05:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:05:57,243 INFO L93 Difference]: Finished difference Result 1928 states and 2667 transitions. [2021-12-18 09:05:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-18 09:05:57,244 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 269 [2021-12-18 09:05:57,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:05:57,248 INFO L225 Difference]: With dead ends: 1928 [2021-12-18 09:05:57,248 INFO L226 Difference]: Without dead ends: 1054 [2021-12-18 09:05:57,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2021-12-18 09:05:57,251 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 783 mSDsluCounter, 5248 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 5997 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 09:05:57,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 5997 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-18 09:05:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-12-18 09:05:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 921. [2021-12-18 09:05:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 690 states have (on average 1.3289855072463768) internal successors, (917), 717 states have internal predecessors, (917), 159 states have call successors, (159), 71 states have call predecessors, (159), 71 states have return successors, (175), 154 states have call predecessors, (175), 158 states have call successors, (175) [2021-12-18 09:05:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1251 transitions. [2021-12-18 09:05:57,277 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1251 transitions. Word has length 269 [2021-12-18 09:05:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:05:57,277 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1251 transitions. [2021-12-18 09:05:57,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 09:05:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1251 transitions. [2021-12-18 09:05:57,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-12-18 09:05:57,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:05:57,281 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:05:57,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 09:05:57,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-18 09:05:57,492 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:05:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:05:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1511056220, now seen corresponding path program 2 times [2021-12-18 09:05:57,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:05:57,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961235785] [2021-12-18 09:05:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:05:57,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:05:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:05:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:05:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:05:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:05:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:05:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:05:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 09:05:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:05:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:05:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 09:05:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-18 09:05:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-18 09:05:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:05:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:05:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:05:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:05:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:05:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-18 09:05:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:05:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 09:05:58,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:05:58,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961235785] [2021-12-18 09:05:58,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961235785] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:05:58,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467242479] [2021-12-18 09:05:58,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 09:05:58,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:05:58,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:05:58,124 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) [2021-12-18 09:05:58,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 09:05:59,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 09:05:59,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 09:05:59,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 3368 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 09:05:59,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:05:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 62 proven. 484 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 09:05:59,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 09:05:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 09:05:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467242479] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 09:05:59,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 09:05:59,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 25] total 39 [2021-12-18 09:05:59,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619325522] [2021-12-18 09:05:59,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 09:05:59,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-18 09:05:59,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:05:59,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-18 09:05:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2021-12-18 09:05:59,997 INFO L87 Difference]: Start difference. First operand 921 states and 1251 transitions. Second operand has 39 states, 39 states have (on average 5.6923076923076925) internal successors, (222), 33 states have internal predecessors, (222), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 09:06:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:06:02,398 INFO L93 Difference]: Finished difference Result 1968 states and 2703 transitions. [2021-12-18 09:06:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-18 09:06:02,399 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.6923076923076925) internal successors, (222), 33 states have internal predecessors, (222), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 293 [2021-12-18 09:06:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:06:02,403 INFO L225 Difference]: With dead ends: 1968 [2021-12-18 09:06:02,403 INFO L226 Difference]: Without dead ends: 1070 [2021-12-18 09:06:02,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=566, Invalid=1156, Unknown=0, NotChecked=0, Total=1722 [2021-12-18 09:06:02,406 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 487 mSDsluCounter, 5296 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 6047 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 09:06:02,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 6047 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-18 09:06:02,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-12-18 09:06:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 937. [2021-12-18 09:06:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 706 states have (on average 1.321529745042493) internal successors, (933), 733 states have internal predecessors, (933), 159 states have call successors, (159), 71 states have call predecessors, (159), 71 states have return successors, (175), 154 states have call predecessors, (175), 158 states have call successors, (175) [2021-12-18 09:06:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1267 transitions. [2021-12-18 09:06:02,431 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1267 transitions. Word has length 293 [2021-12-18 09:06:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:06:02,431 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1267 transitions. [2021-12-18 09:06:02,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.6923076923076925) internal successors, (222), 33 states have internal predecessors, (222), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 09:06:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1267 transitions. [2021-12-18 09:06:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-18 09:06:02,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:06:02,435 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:06:02,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 09:06:02,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-18 09:06:02,650 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:06:02,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:06:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1292684092, now seen corresponding path program 3 times [2021-12-18 09:06:02,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:06:02,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667941998] [2021-12-18 09:06:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:02,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:06:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:06:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:06:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:06:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 09:06:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:06:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:06:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:06:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:06:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:06:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:06:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-18 09:06:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-18 09:06:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 09:06:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:06:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 09:06:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 09:06:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 09:06:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 09:06:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-12-18 09:06:03,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:06:03,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667941998] [2021-12-18 09:06:03,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667941998] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:06:03,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623637134] [2021-12-18 09:06:03,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 09:06:03,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:03,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:06:03,270 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) [2021-12-18 09:06:03,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 09:06:04,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-18 09:06:04,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 09:06:04,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-18 09:06:04,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:06:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2021-12-18 09:06:04,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:06:04,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623637134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:06:04,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:06:04,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 22 [2021-12-18 09:06:04,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270735342] [2021-12-18 09:06:04,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:06:04,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 09:06:04,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:06:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 09:06:04,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2021-12-18 09:06:04,733 INFO L87 Difference]: Start difference. First operand 937 states and 1267 transitions. Second operand has 12 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 09:06:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:06:04,949 INFO L93 Difference]: Finished difference Result 1885 states and 2602 transitions. [2021-12-18 09:06:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 09:06:04,950 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 309 [2021-12-18 09:06:04,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:06:04,954 INFO L225 Difference]: With dead ends: 1885 [2021-12-18 09:06:04,954 INFO L226 Difference]: Without dead ends: 971 [2021-12-18 09:06:04,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-12-18 09:06:04,958 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 32 mSDsluCounter, 7863 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8651 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 09:06:04,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8651 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 09:06:04,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-12-18 09:06:04,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 951. [2021-12-18 09:06:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 716 states have (on average 1.3170391061452513) internal successors, (943), 743 states have internal predecessors, (943), 161 states have call successors, (161), 71 states have call predecessors, (161), 73 states have return successors, (180), 158 states have call predecessors, (180), 160 states have call successors, (180) [2021-12-18 09:06:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1284 transitions. [2021-12-18 09:06:04,999 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1284 transitions. Word has length 309 [2021-12-18 09:06:04,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:06:04,999 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 1284 transitions. [2021-12-18 09:06:05,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 09:06:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1284 transitions. [2021-12-18 09:06:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-12-18 09:06:05,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:06:05,006 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:06:05,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 09:06:05,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 09:06:05,224 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:06:05,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:06:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1262301698, now seen corresponding path program 1 times [2021-12-18 09:06:05,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:06:05,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626958146] [2021-12-18 09:06:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:05,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:06:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:06:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:06:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:06:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 09:06:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:06:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:06:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:06:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 09:06:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 09:06:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 09:06:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 09:06:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:06:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 09:06:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-18 09:06:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2021-12-18 09:06:05,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:06:05,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626958146] [2021-12-18 09:06:05,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626958146] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:06:05,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307918410] [2021-12-18 09:06:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:05,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:05,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:06:05,753 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) [2021-12-18 09:06:05,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 09:06:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:07,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 3576 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 09:06:07,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:06:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2021-12-18 09:06:07,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:06:07,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307918410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:06:07,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:06:07,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-12-18 09:06:07,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337153652] [2021-12-18 09:06:07,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:06:07,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 09:06:07,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:06:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 09:06:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-12-18 09:06:07,481 INFO L87 Difference]: Start difference. First operand 951 states and 1284 transitions. Second operand has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-18 09:06:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:06:07,727 INFO L93 Difference]: Finished difference Result 1900 states and 2577 transitions. [2021-12-18 09:06:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 09:06:07,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 315 [2021-12-18 09:06:07,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:06:07,732 INFO L225 Difference]: With dead ends: 1900 [2021-12-18 09:06:07,732 INFO L226 Difference]: Without dead ends: 957 [2021-12-18 09:06:07,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-18 09:06:07,736 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 30 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3909 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 09:06:07,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 3909 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 09:06:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-12-18 09:06:07,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 954. [2021-12-18 09:06:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 718 states have (on average 1.3161559888579386) internal successors, (945), 746 states have internal predecessors, (945), 161 states have call successors, (161), 71 states have call predecessors, (161), 74 states have return successors, (181), 158 states have call predecessors, (181), 160 states have call successors, (181) [2021-12-18 09:06:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1287 transitions. [2021-12-18 09:06:07,768 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1287 transitions. Word has length 315 [2021-12-18 09:06:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:06:07,769 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1287 transitions. [2021-12-18 09:06:07,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-18 09:06:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1287 transitions. [2021-12-18 09:06:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-12-18 09:06:07,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:06:07,817 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:06:07,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-18 09:06:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:08,018 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:06:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:06:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1359695942, now seen corresponding path program 1 times [2021-12-18 09:06:08,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:06:08,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907838458] [2021-12-18 09:06:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:08,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:06:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:06:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:06:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:06:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 09:06:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:06:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:06:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:06:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 09:06:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 09:06:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 09:06:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 09:06:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 09:06:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 09:06:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:06:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 09:06:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 09:06:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 09:06:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-18 09:06:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2021-12-18 09:06:08,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:06:08,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907838458] [2021-12-18 09:06:08,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907838458] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:06:08,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58895617] [2021-12-18 09:06:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:08,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:06:08,545 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 09:06:08,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-18 09:06:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:09,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3654 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-18 09:06:10,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:06:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2021-12-18 09:06:10,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:06:10,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58895617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:06:10,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:06:10,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 13 [2021-12-18 09:06:10,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103493909] [2021-12-18 09:06:10,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:06:10,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 09:06:10,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:06:10,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 09:06:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-18 09:06:10,390 INFO L87 Difference]: Start difference. First operand 954 states and 1287 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 09:06:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:06:10,446 INFO L93 Difference]: Finished difference Result 2080 states and 2851 transitions. [2021-12-18 09:06:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 09:06:10,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 319 [2021-12-18 09:06:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:06:10,451 INFO L225 Difference]: With dead ends: 2080 [2021-12-18 09:06:10,451 INFO L226 Difference]: Without dead ends: 1149 [2021-12-18 09:06:10,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 381 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-18 09:06:10,454 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 182 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:06:10,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 5663 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 09:06:10,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2021-12-18 09:06:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 959. [2021-12-18 09:06:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 722 states have (on average 1.314404432132964) internal successors, (949), 749 states have internal predecessors, (949), 161 states have call successors, (161), 71 states have call predecessors, (161), 75 states have return successors, (183), 160 states have call predecessors, (183), 160 states have call successors, (183) [2021-12-18 09:06:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1293 transitions. [2021-12-18 09:06:10,490 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1293 transitions. Word has length 319 [2021-12-18 09:06:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:06:10,490 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1293 transitions. [2021-12-18 09:06:10,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 09:06:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1293 transitions. [2021-12-18 09:06:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-12-18 09:06:10,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:06:10,496 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:06:10,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-18 09:06:10,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-12-18 09:06:10,700 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:06:10,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:06:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1464494367, now seen corresponding path program 1 times [2021-12-18 09:06:10,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:06:10,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105636952] [2021-12-18 09:06:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:10,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:06:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:06:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:06:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:06:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 09:06:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:06:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 09:06:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:06:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 09:06:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 09:06:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 09:06:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 09:06:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-18 09:06:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-18 09:06:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:06:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 09:06:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 09:06:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 09:06:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-18 09:06:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2021-12-18 09:06:11,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:06:11,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105636952] [2021-12-18 09:06:11,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105636952] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:06:11,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996718249] [2021-12-18 09:06:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:11,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:11,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:06:11,226 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 09:06:11,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-18 09:06:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:12,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 3721 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-18 09:06:12,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:06:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2021-12-18 09:06:13,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:06:13,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996718249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:06:13,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:06:13,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2021-12-18 09:06:13,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022339610] [2021-12-18 09:06:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:06:13,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 09:06:13,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:06:13,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 09:06:13,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-12-18 09:06:13,006 INFO L87 Difference]: Start difference. First operand 959 states and 1293 transitions. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-18 09:06:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:06:13,139 INFO L93 Difference]: Finished difference Result 1927 states and 2613 transitions. [2021-12-18 09:06:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 09:06:13,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) Word has length 339 [2021-12-18 09:06:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:06:13,160 INFO L225 Difference]: With dead ends: 1927 [2021-12-18 09:06:13,160 INFO L226 Difference]: Without dead ends: 991 [2021-12-18 09:06:13,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-12-18 09:06:13,163 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 20 mSDsluCounter, 5547 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6341 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 09:06:13,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 6341 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 09:06:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-12-18 09:06:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 968. [2021-12-18 09:06:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 730 states have (on average 1.3136986301369864) internal successors, (959), 757 states have internal predecessors, (959), 161 states have call successors, (161), 71 states have call predecessors, (161), 76 states have return successors, (185), 161 states have call predecessors, (185), 160 states have call successors, (185) [2021-12-18 09:06:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1305 transitions. [2021-12-18 09:06:13,193 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1305 transitions. Word has length 339 [2021-12-18 09:06:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:06:13,193 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1305 transitions. [2021-12-18 09:06:13,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-18 09:06:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1305 transitions. [2021-12-18 09:06:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2021-12-18 09:06:13,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:06:13,200 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:06:13,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-18 09:06:13,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:13,413 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:06:13,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:06:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash -14777961, now seen corresponding path program 1 times [2021-12-18 09:06:13,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:06:13,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701510500] [2021-12-18 09:06:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:13,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:06:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:06:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:06:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:06:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 09:06:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:06:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 09:06:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:06:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 09:06:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 09:06:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-18 09:06:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-18 09:06:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-18 09:06:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:06:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 09:06:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 09:06:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2021-12-18 09:06:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1295 trivial. 0 not checked. [2021-12-18 09:06:15,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:06:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701510500] [2021-12-18 09:06:15,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701510500] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:06:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283905436] [2021-12-18 09:06:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:15,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:06:15,490 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 09:06:15,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-18 09:06:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:17,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 3855 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 09:06:17,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:06:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2021-12-18 09:06:17,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 09:06:17,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283905436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:06:17,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 09:06:17,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2021-12-18 09:06:17,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998069808] [2021-12-18 09:06:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:06:17,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 09:06:17,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:06:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 09:06:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-18 09:06:17,788 INFO L87 Difference]: Start difference. First operand 968 states and 1305 transitions. Second operand has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-18 09:06:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:06:17,860 INFO L93 Difference]: Finished difference Result 1922 states and 2647 transitions. [2021-12-18 09:06:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 09:06:17,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 379 [2021-12-18 09:06:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:06:17,865 INFO L225 Difference]: With dead ends: 1922 [2021-12-18 09:06:17,865 INFO L226 Difference]: Without dead ends: 974 [2021-12-18 09:06:17,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-18 09:06:17,869 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 291 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:06:17,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2827 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 09:06:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-12-18 09:06:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 974. [2021-12-18 09:06:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 734 states have (on average 1.3147138964577656) internal successors, (965), 763 states have internal predecessors, (965), 161 states have call successors, (161), 71 states have call predecessors, (161), 78 states have return successors, (189), 161 states have call predecessors, (189), 160 states have call successors, (189) [2021-12-18 09:06:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1315 transitions. [2021-12-18 09:06:17,900 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1315 transitions. Word has length 379 [2021-12-18 09:06:17,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:06:17,901 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 1315 transitions. [2021-12-18 09:06:17,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-18 09:06:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1315 transitions. [2021-12-18 09:06:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-12-18 09:06:17,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:06:17,905 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:06:17,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-18 09:06:18,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:18,120 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:06:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:06:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash 618785203, now seen corresponding path program 1 times [2021-12-18 09:06:18,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:06:18,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940645951] [2021-12-18 09:06:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:18,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:06:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:06:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:06:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 09:06:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 09:06:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:06:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 09:06:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:06:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 09:06:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 09:06:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 09:06:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 09:06:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 09:06:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:06:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 09:06:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 09:06:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-12-18 09:06:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2021-12-18 09:06:20,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:06:20,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940645951] [2021-12-18 09:06:20,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940645951] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:06:20,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788849214] [2021-12-18 09:06:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:20,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:06:20,055 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 09:06:20,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-18 09:06:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:23,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 3915 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-18 09:06:23,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:06:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 193 proven. 710 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-12-18 09:06:23,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 09:06:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2021-12-18 09:06:24,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788849214] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 09:06:24,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 09:06:24,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 5] total 33 [2021-12-18 09:06:24,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639004514] [2021-12-18 09:06:24,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 09:06:24,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-18 09:06:24,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:06:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-18 09:06:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 09:06:24,393 INFO L87 Difference]: Start difference. First operand 974 states and 1315 transitions. Second operand has 33 states, 32 states have (on average 8.375) internal successors, (268), 27 states have internal predecessors, (268), 3 states have call successors, (55), 8 states have call predecessors, (55), 5 states have return successors, (43), 2 states have call predecessors, (43), 3 states have call successors, (43) [2021-12-18 09:06:28,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:06:28,687 INFO L93 Difference]: Finished difference Result 2044 states and 2832 transitions. [2021-12-18 09:06:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 09:06:28,688 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 8.375) internal successors, (268), 27 states have internal predecessors, (268), 3 states have call successors, (55), 8 states have call predecessors, (55), 5 states have return successors, (43), 2 states have call predecessors, (43), 3 states have call successors, (43) Word has length 383 [2021-12-18 09:06:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:06:28,693 INFO L225 Difference]: With dead ends: 2044 [2021-12-18 09:06:28,693 INFO L226 Difference]: Without dead ends: 1090 [2021-12-18 09:06:28,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 831 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=308, Invalid=3474, Unknown=0, NotChecked=0, Total=3782 [2021-12-18 09:06:28,699 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 794 mSDsluCounter, 13409 mSDsCounter, 0 mSdLazyCounter, 5776 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 14168 SdHoareTripleChecker+Invalid, 6162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 5776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-18 09:06:28,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 14168 Invalid, 6162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 5776 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-18 09:06:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-12-18 09:06:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 990. [2021-12-18 09:06:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 749 states have (on average 1.3244325767690253) internal successors, (992), 777 states have internal predecessors, (992), 161 states have call successors, (161), 73 states have call predecessors, (161), 79 states have return successors, (191), 161 states have call predecessors, (191), 160 states have call successors, (191) [2021-12-18 09:06:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1344 transitions. [2021-12-18 09:06:28,733 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1344 transitions. Word has length 383 [2021-12-18 09:06:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:06:28,734 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 1344 transitions. [2021-12-18 09:06:28,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 8.375) internal successors, (268), 27 states have internal predecessors, (268), 3 states have call successors, (55), 8 states have call predecessors, (55), 5 states have return successors, (43), 2 states have call predecessors, (43), 3 states have call successors, (43) [2021-12-18 09:06:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1344 transitions. [2021-12-18 09:06:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-12-18 09:06:28,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:06:28,739 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:06:28,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-18 09:06:28,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-18 09:06:28,960 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:06:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:06:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1130840471, now seen corresponding path program 2 times [2021-12-18 09:06:28,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:06:28,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863358917] [2021-12-18 09:06:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:28,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:06:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:06:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:06:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 09:06:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 09:06:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:06:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 09:06:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:06:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 09:06:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 09:06:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-18 09:06:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-18 09:06:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-18 09:06:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:06:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 09:06:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 09:06:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 09:06:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2021-12-18 09:06:31,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:06:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863358917] [2021-12-18 09:06:31,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863358917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:06:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797167969] [2021-12-18 09:06:31,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 09:06:31,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:31,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:06:31,921 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 09:06:31,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-18 09:06:36,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 09:06:36,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 09:06:36,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 4005 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-18 09:06:36,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 09:06:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 54 proven. 270 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2021-12-18 09:06:36,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 09:06:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 1339 trivial. 0 not checked. [2021-12-18 09:06:37,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797167969] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 09:06:37,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 09:06:37,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 6] total 26 [2021-12-18 09:06:37,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465802207] [2021-12-18 09:06:37,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 09:06:37,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-18 09:06:37,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:06:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-18 09:06:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2021-12-18 09:06:37,622 INFO L87 Difference]: Start difference. First operand 990 states and 1344 transitions. Second operand has 26 states, 25 states have (on average 8.84) internal successors, (221), 20 states have internal predecessors, (221), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-18 09:06:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:06:40,784 INFO L93 Difference]: Finished difference Result 2118 states and 2961 transitions. [2021-12-18 09:06:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-18 09:06:40,785 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 8.84) internal successors, (221), 20 states have internal predecessors, (221), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) Word has length 389 [2021-12-18 09:06:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:06:40,790 INFO L225 Difference]: With dead ends: 2118 [2021-12-18 09:06:40,790 INFO L226 Difference]: Without dead ends: 1144 [2021-12-18 09:06:40,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 850 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=2145, Unknown=0, NotChecked=0, Total=2550 [2021-12-18 09:06:40,795 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 1298 mSDsluCounter, 8962 mSDsCounter, 0 mSdLazyCounter, 3578 mSolverCounterSat, 839 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 9723 SdHoareTripleChecker+Invalid, 4417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 839 IncrementalHoareTripleChecker+Valid, 3578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-18 09:06:40,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 9723 Invalid, 4417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [839 Valid, 3578 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-18 09:06:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-12-18 09:06:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1022. [2021-12-18 09:06:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 779 states have (on average 1.3401797175866494) internal successors, (1044), 807 states have internal predecessors, (1044), 161 states have call successors, (161), 75 states have call predecessors, (161), 81 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-12-18 09:06:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1395 transitions. [2021-12-18 09:06:40,835 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1395 transitions. Word has length 389 [2021-12-18 09:06:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:06:40,836 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1395 transitions. [2021-12-18 09:06:40,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 8.84) internal successors, (221), 20 states have internal predecessors, (221), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-18 09:06:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1395 transitions. [2021-12-18 09:06:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-18 09:06:40,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:06:40,841 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 23, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:06:40,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-18 09:06:41,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:41,056 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:06:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:06:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1238147935, now seen corresponding path program 3 times [2021-12-18 09:06:41,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:06:41,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628754758] [2021-12-18 09:06:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:06:41,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:06:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:06:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:06:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 09:06:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 09:06:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:06:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 09:06:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 09:06:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 09:06:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:06:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 09:06:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 09:06:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 09:06:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-18 09:06:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-18 09:06:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:06:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 09:06:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 09:06:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 09:06:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:06:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:06:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 09:06:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 09:06:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-18 09:06:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:06:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 2 proven. 104 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2021-12-18 09:06:42,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:06:42,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628754758] [2021-12-18 09:06:42,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628754758] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 09:06:42,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186576588] [2021-12-18 09:06:42,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 09:06:42,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 09:06:42,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:06:42,443 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 09:06:42,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process Killed by 15