./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.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 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:39:28,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:39:28,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:39:28,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:39:28,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:39:28,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:39:28,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:39:28,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:39:28,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:39:28,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:39:28,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:39:28,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:39:28,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:39:28,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:39:28,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:39:28,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:39:28,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:39:28,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:39:28,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:39:28,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:39:28,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:39:28,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:39:28,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:39:28,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:39:28,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:39:28,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:39:28,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:39:28,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:39:28,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:39:28,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:39:28,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:39:28,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:39:28,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:39:28,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:39:28,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:39:28,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:39:28,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:39:28,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:39:28,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:39:28,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:39:28,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:39:28,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:39:28,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:39:28,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:39:28,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:39:28,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:39:28,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:39:28,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:39:28,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:39:28,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:39:28,208 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:39:28,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:39:28,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:39:28,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:39:28,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:39:28,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:39:28,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:39:28,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:39:28,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:39:28,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:39:28,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:39:28,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:39:28,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:39:28,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:39:28,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:39:28,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:39:28,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:39:28,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:39:28,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:39:28,212 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:39:28,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:39:28,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:39:28,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:39:28,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 [2021-12-22 14:39:28,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:39:28,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:39:28,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:39:28,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:39:28,466 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:39:28,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2021-12-22 14:39:28,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3d1ce83/88c8b5fcc25c49e8b693fb076ad0ddda/FLAG06e75e51e [2021-12-22 14:39:29,160 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:39:29,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2021-12-22 14:39:29,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3d1ce83/88c8b5fcc25c49e8b693fb076ad0ddda/FLAG06e75e51e [2021-12-22 14:39:29,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3d1ce83/88c8b5fcc25c49e8b693fb076ad0ddda [2021-12-22 14:39:29,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:39:29,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:39:29,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:39:29,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:39:29,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:39:29,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:29" (1/1) ... [2021-12-22 14:39:29,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59018b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:29, skipping insertion in model container [2021-12-22 14:39:29,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:29" (1/1) ... [2021-12-22 14:39:29,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:39:29,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:39:30,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2021-12-22 14:39:30,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:39:30,465 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:39:30,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2021-12-22 14:39:30,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:39:30,747 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:39:30,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30 WrapperNode [2021-12-22 14:39:30,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:39:30,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:39:30,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:39:30,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:39:30,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:30,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:30,878 INFO L137 Inliner]: procedures = 176, calls = 448, calls flagged for inlining = 92, calls inlined = 85, statements flattened = 1769 [2021-12-22 14:39:30,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:39:30,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:39:30,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:39:30,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:39:30,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:30,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:30,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:30,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:30,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:30,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:30,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:31,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:39:31,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:39:31,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:39:31,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:39:31,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (1/1) ... [2021-12-22 14:39:31,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:39:31,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:39:31,043 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) [2021-12-22 14:39:31,070 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 [2021-12-22 14:39:31,083 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 14:39:31,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 14:39:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2021-12-22 14:39:31,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2021-12-22 14:39:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2021-12-22 14:39:31,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2021-12-22 14:39:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:39:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-22 14:39:31,085 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-22 14:39:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:39:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:39:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:39:31,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:39:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:39:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-22 14:39:31,085 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-22 14:39:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-12-22 14:39:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-12-22 14:39:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:39:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:39:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-22 14:39:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-22 14:39:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:39:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:39:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2021-12-22 14:39:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2021-12-22 14:39:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-22 14:39:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-22 14:39:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-22 14:39:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-22 14:39:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-22 14:39:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-22 14:39:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2021-12-22 14:39:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2021-12-22 14:39:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:39:31,088 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:39:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:39:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:39:31,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:39:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-22 14:39:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-22 14:39:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2021-12-22 14:39:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2021-12-22 14:39:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:39:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:39:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-22 14:39:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-22 14:39:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2021-12-22 14:39:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2021-12-22 14:39:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:39:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:39:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:39:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-22 14:39:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-22 14:39:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:39:31,091 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:39:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:39:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:39:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:39:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-22 14:39:31,092 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-22 14:39:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-12-22 14:39:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-12-22 14:39:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:39:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-22 14:39:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-22 14:39:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-12-22 14:39:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-12-22 14:39:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2021-12-22 14:39:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2021-12-22 14:39:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:39:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:39:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-22 14:39:31,094 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-22 14:39:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2021-12-22 14:39:31,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2021-12-22 14:39:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:39:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:39:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-22 14:39:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-22 14:39:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2021-12-22 14:39:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2021-12-22 14:39:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-22 14:39:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-22 14:39:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:39:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-22 14:39:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-22 14:39:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:39:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:39:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:39:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-22 14:39:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-22 14:39:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:39:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:39:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2021-12-22 14:39:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2021-12-22 14:39:31,367 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:39:31,369 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:39:31,430 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:39:32,187 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:39:32,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:39:32,201 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-22 14:39:32,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:32 BoogieIcfgContainer [2021-12-22 14:39:32,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:39:32,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:39:32,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:39:32,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:39:32,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:39:29" (1/3) ... [2021-12-22 14:39:32,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a46b3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:32, skipping insertion in model container [2021-12-22 14:39:32,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:30" (2/3) ... [2021-12-22 14:39:32,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a46b3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:32, skipping insertion in model container [2021-12-22 14:39:32,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:32" (3/3) ... [2021-12-22 14:39:32,212 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2021-12-22 14:39:32,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:39:32,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:39:32,259 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:39:32,264 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 [2021-12-22 14:39:32,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:39:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 644 states, 483 states have (on average 1.391304347826087) internal successors, (672), 499 states have internal predecessors, (672), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2021-12-22 14:39:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 14:39:32,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:32,294 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:32,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:32,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1758611482, now seen corresponding path program 1 times [2021-12-22 14:39:32,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:32,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410549764] [2021-12-22 14:39:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:32,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-22 14:39:32,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:32,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410549764] [2021-12-22 14:39:32,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410549764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:32,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:32,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:39:32,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513832894] [2021-12-22 14:39:32,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:32,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:39:32,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:32,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:39:32,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:39:32,716 INFO L87 Difference]: Start difference. First operand has 644 states, 483 states have (on average 1.391304347826087) internal successors, (672), 499 states have internal predecessors, (672), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-22 14:39:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:33,899 INFO L93 Difference]: Finished difference Result 2033 states and 2996 transitions. [2021-12-22 14:39:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:39:33,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 78 [2021-12-22 14:39:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:33,940 INFO L225 Difference]: With dead ends: 2033 [2021-12-22 14:39:33,948 INFO L226 Difference]: Without dead ends: 1378 [2021-12-22 14:39:33,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:39:33,991 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 1248 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:33,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 2062 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 14:39:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-12-22 14:39:34,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1222. [2021-12-22 14:39:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 926 states have (on average 1.3736501079913608) internal successors, (1272), 946 states have internal predecessors, (1272), 219 states have call successors, (219), 77 states have call predecessors, (219), 76 states have return successors, (218), 214 states have call predecessors, (218), 218 states have call successors, (218) [2021-12-22 14:39:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2021-12-22 14:39:34,113 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 78 [2021-12-22 14:39:34,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:34,114 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2021-12-22 14:39:34,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-22 14:39:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2021-12-22 14:39:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-22 14:39:34,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:34,124 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:34,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:39:34,125 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:34,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:34,125 INFO L85 PathProgramCache]: Analyzing trace with hash -152487068, now seen corresponding path program 1 times [2021-12-22 14:39:34,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:34,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079065226] [2021-12-22 14:39:34,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:34,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-22 14:39:34,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:34,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079065226] [2021-12-22 14:39:34,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079065226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:34,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:34,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:34,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600773314] [2021-12-22 14:39:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:34,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:34,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:34,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:34,330 INFO L87 Difference]: Start difference. First operand 1222 states and 1709 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-22 14:39:35,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:35,706 INFO L93 Difference]: Finished difference Result 3917 states and 5611 transitions. [2021-12-22 14:39:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:39:35,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2021-12-22 14:39:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:35,737 INFO L225 Difference]: With dead ends: 3917 [2021-12-22 14:39:35,737 INFO L226 Difference]: Without dead ends: 2713 [2021-12-22 14:39:35,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:35,745 INFO L933 BasicCegarLoop]: 974 mSDtfsCounter, 1267 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:35,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1359 Valid, 3610 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 14:39:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-12-22 14:39:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2509. [2021-12-22 14:39:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1903 states have (on average 1.3751970572779821) internal successors, (2617), 1951 states have internal predecessors, (2617), 443 states have call successors, (443), 153 states have call predecessors, (443), 162 states have return successors, (500), 438 states have call predecessors, (500), 442 states have call successors, (500) [2021-12-22 14:39:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3560 transitions. [2021-12-22 14:39:35,854 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3560 transitions. Word has length 82 [2021-12-22 14:39:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:35,856 INFO L470 AbstractCegarLoop]: Abstraction has 2509 states and 3560 transitions. [2021-12-22 14:39:35,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-22 14:39:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3560 transitions. [2021-12-22 14:39:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-22 14:39:35,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:35,862 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-22 14:39:35,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:39:35,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash -950375967, now seen corresponding path program 1 times [2021-12-22 14:39:35,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:35,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150517594] [2021-12-22 14:39:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:35,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:39:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:39:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:39:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-22 14:39:36,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:36,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150517594] [2021-12-22 14:39:36,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150517594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:36,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:36,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:39:36,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837454013] [2021-12-22 14:39:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:36,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:39:36,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:36,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:39:36,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:39:36,057 INFO L87 Difference]: Start difference. First operand 2509 states and 3560 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 14:39:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:37,633 INFO L93 Difference]: Finished difference Result 6827 states and 9761 transitions. [2021-12-22 14:39:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 14:39:37,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2021-12-22 14:39:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:37,649 INFO L225 Difference]: With dead ends: 6827 [2021-12-22 14:39:37,650 INFO L226 Difference]: Without dead ends: 4342 [2021-12-22 14:39:37,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:39:37,663 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 1615 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 787 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 787 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:37,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 2606 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [787 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 14:39:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2021-12-22 14:39:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 3931. [2021-12-22 14:39:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 2993 states have (on average 1.3742064817908453) internal successors, (4113), 3055 states have internal predecessors, (4113), 659 states have call successors, (659), 249 states have call predecessors, (659), 278 states have return successors, (777), 662 states have call predecessors, (777), 658 states have call successors, (777) [2021-12-22 14:39:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 5549 transitions. [2021-12-22 14:39:37,775 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 5549 transitions. Word has length 128 [2021-12-22 14:39:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:37,777 INFO L470 AbstractCegarLoop]: Abstraction has 3931 states and 5549 transitions. [2021-12-22 14:39:37,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 14:39:37,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 5549 transitions. [2021-12-22 14:39:37,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 14:39:37,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:37,789 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1] [2021-12-22 14:39:37,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:39:37,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -944835305, now seen corresponding path program 1 times [2021-12-22 14:39:37,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:37,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335032983] [2021-12-22 14:39:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:37,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 14:39:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:39:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:39:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 14:39:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-22 14:39:38,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:38,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335032983] [2021-12-22 14:39:38,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335032983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:38,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:38,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:39:38,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405287887] [2021-12-22 14:39:38,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:38,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:39:38,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:38,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:39:38,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:39:38,010 INFO L87 Difference]: Start difference. First operand 3931 states and 5549 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 14:39:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:39,454 INFO L93 Difference]: Finished difference Result 9990 states and 14092 transitions. [2021-12-22 14:39:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:39:39,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2021-12-22 14:39:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:39,479 INFO L225 Difference]: With dead ends: 9990 [2021-12-22 14:39:39,479 INFO L226 Difference]: Without dead ends: 6083 [2021-12-22 14:39:39,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:39,490 INFO L933 BasicCegarLoop]: 1201 mSDtfsCounter, 1046 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:39,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 2862 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 14:39:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6083 states. [2021-12-22 14:39:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 5590. [2021-12-22 14:39:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4255 states have (on average 1.3635722679200941) internal successors, (5802), 4361 states have internal predecessors, (5802), 906 states have call successors, (906), 383 states have call predecessors, (906), 428 states have return successors, (1074), 909 states have call predecessors, (1074), 905 states have call successors, (1074) [2021-12-22 14:39:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7782 transitions. [2021-12-22 14:39:39,664 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7782 transitions. Word has length 149 [2021-12-22 14:39:39,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:39,664 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 7782 transitions. [2021-12-22 14:39:39,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 14:39:39,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7782 transitions. [2021-12-22 14:39:39,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 14:39:39,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:39,672 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:39,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:39:39,672 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:39,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:39,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1643009203, now seen corresponding path program 1 times [2021-12-22 14:39:39,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:39,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933845320] [2021-12-22 14:39:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:39,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:39:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:39:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 14:39:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:39:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:39:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-22 14:39:39,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:39,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933845320] [2021-12-22 14:39:39,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933845320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:39,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:39,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:39:39,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494275607] [2021-12-22 14:39:39,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:39,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:39:39,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:39:39,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:39:39,820 INFO L87 Difference]: Start difference. First operand 5590 states and 7782 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 14:39:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:41,817 INFO L93 Difference]: Finished difference Result 14712 states and 20604 transitions. [2021-12-22 14:39:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 14:39:41,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2021-12-22 14:39:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:41,856 INFO L225 Difference]: With dead ends: 14712 [2021-12-22 14:39:41,856 INFO L226 Difference]: Without dead ends: 9157 [2021-12-22 14:39:41,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:39:41,873 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 1619 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:41,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1696 Valid, 3020 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 14:39:41,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9157 states. [2021-12-22 14:39:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9157 to 8330. [2021-12-22 14:39:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8330 states, 6415 states have (on average 1.3624318004676539) internal successors, (8740), 6559 states have internal predecessors, (8740), 1254 states have call successors, (1254), 587 states have call predecessors, (1254), 660 states have return successors, (1489), 1267 states have call predecessors, (1489), 1253 states have call successors, (1489) [2021-12-22 14:39:42,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 11483 transitions. [2021-12-22 14:39:42,166 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 11483 transitions. Word has length 151 [2021-12-22 14:39:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:42,167 INFO L470 AbstractCegarLoop]: Abstraction has 8330 states and 11483 transitions. [2021-12-22 14:39:42,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 14:39:42,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 11483 transitions. [2021-12-22 14:39:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 14:39:42,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:42,177 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:42,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:39:42,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1373098194, now seen corresponding path program 1 times [2021-12-22 14:39:42,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:42,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098606899] [2021-12-22 14:39:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:42,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:39:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:39:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 14:39:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:39:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:39:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-22 14:39:42,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:42,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098606899] [2021-12-22 14:39:42,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098606899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:42,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:42,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:39:42,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138967253] [2021-12-22 14:39:42,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:42,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:39:42,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:39:42,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:39:42,376 INFO L87 Difference]: Start difference. First operand 8330 states and 11483 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 14:39:43,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:43,751 INFO L93 Difference]: Finished difference Result 13560 states and 19023 transitions. [2021-12-22 14:39:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:39:43,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2021-12-22 14:39:43,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:43,799 INFO L225 Difference]: With dead ends: 13560 [2021-12-22 14:39:43,799 INFO L226 Difference]: Without dead ends: 9164 [2021-12-22 14:39:43,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:43,815 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 530 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:43,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 2948 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 14:39:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2021-12-22 14:39:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 8350. [2021-12-22 14:39:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 6435 states have (on average 1.3613053613053614) internal successors, (8760), 6579 states have internal predecessors, (8760), 1254 states have call successors, (1254), 587 states have call predecessors, (1254), 660 states have return successors, (1489), 1267 states have call predecessors, (1489), 1253 states have call successors, (1489) [2021-12-22 14:39:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 11503 transitions. [2021-12-22 14:39:44,072 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 11503 transitions. Word has length 156 [2021-12-22 14:39:44,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:44,073 INFO L470 AbstractCegarLoop]: Abstraction has 8350 states and 11503 transitions. [2021-12-22 14:39:44,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 14:39:44,073 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 11503 transitions. [2021-12-22 14:39:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-22 14:39:44,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:44,084 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:44,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:39:44,084 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:44,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash 554198863, now seen corresponding path program 1 times [2021-12-22 14:39:44,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:44,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053942938] [2021-12-22 14:39:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:44,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:39:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:39:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 14:39:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:39:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:39:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-22 14:39:44,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:44,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053942938] [2021-12-22 14:39:44,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053942938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:44,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:44,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 14:39:44,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825527921] [2021-12-22 14:39:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:44,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 14:39:44,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:44,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 14:39:44,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:39:44,387 INFO L87 Difference]: Start difference. First operand 8350 states and 11503 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-22 14:39:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:47,426 INFO L93 Difference]: Finished difference Result 18695 states and 25902 transitions. [2021-12-22 14:39:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 14:39:47,427 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) Word has length 158 [2021-12-22 14:39:47,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:47,494 INFO L225 Difference]: With dead ends: 18695 [2021-12-22 14:39:47,494 INFO L226 Difference]: Without dead ends: 10380 [2021-12-22 14:39:47,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2021-12-22 14:39:47,512 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 3198 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 1701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3287 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 4985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1701 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:47,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3287 Valid, 3769 Invalid, 4985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1701 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-22 14:39:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10380 states. [2021-12-22 14:39:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10380 to 8726. [2021-12-22 14:39:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8726 states, 6679 states have (on average 1.3505015720916305) internal successors, (9020), 6821 states have internal predecessors, (9020), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 700 states have return successors, (1519), 1331 states have call predecessors, (1519), 1345 states have call successors, (1519) [2021-12-22 14:39:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 11885 transitions. [2021-12-22 14:39:47,805 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 11885 transitions. Word has length 158 [2021-12-22 14:39:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:47,806 INFO L470 AbstractCegarLoop]: Abstraction has 8726 states and 11885 transitions. [2021-12-22 14:39:47,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-22 14:39:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 11885 transitions. [2021-12-22 14:39:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-22 14:39:47,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:47,823 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:47,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:39:47,824 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:47,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash -3224619, now seen corresponding path program 1 times [2021-12-22 14:39:47,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:47,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631957612] [2021-12-22 14:39:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:47,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:39:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:39:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:39:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 14:39:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:39:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:48,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-22 14:39:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:48,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-22 14:39:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-12-22 14:39:48,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:48,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631957612] [2021-12-22 14:39:48,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631957612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:48,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:48,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:39:48,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333733311] [2021-12-22 14:39:48,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:48,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:39:48,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:39:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:39:48,138 INFO L87 Difference]: Start difference. First operand 8726 states and 11885 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 14:39:49,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:49,503 INFO L93 Difference]: Finished difference Result 18475 states and 25394 transitions. [2021-12-22 14:39:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:39:49,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2021-12-22 14:39:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:49,531 INFO L225 Difference]: With dead ends: 18475 [2021-12-22 14:39:49,531 INFO L226 Difference]: Without dead ends: 9784 [2021-12-22 14:39:49,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:39:49,549 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 426 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:49,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 3563 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 14:39:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2021-12-22 14:39:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 8790. [2021-12-22 14:39:49,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 6727 states have (on average 1.3480005946187008) internal successors, (9068), 6869 states have internal predecessors, (9068), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 716 states have return successors, (1543), 1347 states have call predecessors, (1543), 1345 states have call successors, (1543) [2021-12-22 14:39:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 11957 transitions. [2021-12-22 14:39:49,876 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 11957 transitions. Word has length 193 [2021-12-22 14:39:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:49,877 INFO L470 AbstractCegarLoop]: Abstraction has 8790 states and 11957 transitions. [2021-12-22 14:39:49,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 14:39:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 11957 transitions. [2021-12-22 14:39:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-22 14:39:49,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:49,891 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:49,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:39:49,891 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:49,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1088928772, now seen corresponding path program 1 times [2021-12-22 14:39:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:49,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522484467] [2021-12-22 14:39:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:49,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:49,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:49,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:49,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:39:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:39:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 14:39:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 14:39:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 14:39:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 14:39:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:39:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-22 14:39:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-22 14:39:50,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:50,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522484467] [2021-12-22 14:39:50,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522484467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:50,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:50,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:50,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725690725] [2021-12-22 14:39:50,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:50,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:50,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:50,116 INFO L87 Difference]: Start difference. First operand 8790 states and 11957 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 14:39:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:52,371 INFO L93 Difference]: Finished difference Result 22136 states and 30222 transitions. [2021-12-22 14:39:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:39:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 215 [2021-12-22 14:39:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:52,410 INFO L225 Difference]: With dead ends: 22136 [2021-12-22 14:39:52,410 INFO L226 Difference]: Without dead ends: 13381 [2021-12-22 14:39:52,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:52,429 INFO L933 BasicCegarLoop]: 1444 mSDtfsCounter, 1149 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 4153 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:52,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 4153 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 14:39:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2021-12-22 14:39:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 8806. [2021-12-22 14:39:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8806 states, 6743 states have (on average 1.3471748479905086) internal successors, (9084), 6885 states have internal predecessors, (9084), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 716 states have return successors, (1543), 1347 states have call predecessors, (1543), 1345 states have call successors, (1543) [2021-12-22 14:39:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 11973 transitions. [2021-12-22 14:39:52,727 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 11973 transitions. Word has length 215 [2021-12-22 14:39:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:52,728 INFO L470 AbstractCegarLoop]: Abstraction has 8806 states and 11973 transitions. [2021-12-22 14:39:52,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 14:39:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 11973 transitions. [2021-12-22 14:39:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-22 14:39:52,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:52,739 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:52,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:39:52,739 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2069474836, now seen corresponding path program 1 times [2021-12-22 14:39:52,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:52,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841377670] [2021-12-22 14:39:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:52,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:39:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:39:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:39:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:39:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:39:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:52,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 14:39:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:39:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:39:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:39:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-22 14:39:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-12-22 14:39:53,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841377670] [2021-12-22 14:39:53,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841377670] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:39:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730140461] [2021-12-22 14:39:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:53,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:39:53,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:39:53,123 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) [2021-12-22 14:39:53,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:39:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 14:39:53,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:39:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-12-22 14:39:53,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:39:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2021-12-22 14:39:54,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730140461] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:39:54,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:39:54,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 20 [2021-12-22 14:39:54,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288417363] [2021-12-22 14:39:54,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:39:54,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-22 14:39:54,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:54,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-22 14:39:54,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-12-22 14:39:54,400 INFO L87 Difference]: Start difference. First operand 8806 states and 11973 transitions. Second operand has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) [2021-12-22 14:40:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:01,730 INFO L93 Difference]: Finished difference Result 31956 states and 44216 transitions. [2021-12-22 14:40:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-22 14:40:01,731 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) Word has length 200 [2021-12-22 14:40:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:01,844 INFO L225 Difference]: With dead ends: 31956 [2021-12-22 14:40:01,845 INFO L226 Difference]: Without dead ends: 27104 [2021-12-22 14:40:01,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=556, Invalid=1994, Unknown=0, NotChecked=0, Total=2550 [2021-12-22 14:40:01,869 INFO L933 BasicCegarLoop]: 1608 mSDtfsCounter, 9466 mSDsluCounter, 5857 mSDsCounter, 0 mSdLazyCounter, 7672 mSolverCounterSat, 4424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9742 SdHoareTripleChecker+Valid, 7465 SdHoareTripleChecker+Invalid, 12096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4424 IncrementalHoareTripleChecker+Valid, 7672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:01,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9742 Valid, 7465 Invalid, 12096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4424 Valid, 7672 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-12-22 14:40:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states. [2021-12-22 14:40:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27104 to 24845. [2021-12-22 14:40:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24845 states, 18848 states have (on average 1.3417869269949065) internal successors, (25290), 19360 states have internal predecessors, (25290), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (5009), 3909 states have call predecessors, (5009), 3883 states have call successors, (5009) [2021-12-22 14:40:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24845 states to 24845 states and 34183 transitions. [2021-12-22 14:40:02,885 INFO L78 Accepts]: Start accepts. Automaton has 24845 states and 34183 transitions. Word has length 200 [2021-12-22 14:40:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:02,885 INFO L470 AbstractCegarLoop]: Abstraction has 24845 states and 34183 transitions. [2021-12-22 14:40:02,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) [2021-12-22 14:40:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 24845 states and 34183 transitions. [2021-12-22 14:40:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-22 14:40:02,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:02,897 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:40:02,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:40:03,111 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,SelfDestructingSolverStorable9 [2021-12-22 14:40:03,112 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:03,112 INFO L85 PathProgramCache]: Analyzing trace with hash -872421549, now seen corresponding path program 1 times [2021-12-22 14:40:03,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:03,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221945144] [2021-12-22 14:40:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:03,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:40:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:40:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:40:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:40:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:40:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:40:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:40:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:40:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 14:40:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:40:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:40:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:40:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 14:40:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-12-22 14:40:03,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221945144] [2021-12-22 14:40:03,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221945144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:03,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:03,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:40:03,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447150348] [2021-12-22 14:40:03,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:03,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:40:03,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:40:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:40:03,301 INFO L87 Difference]: Start difference. First operand 24845 states and 34183 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-22 14:40:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:05,240 INFO L93 Difference]: Finished difference Result 47218 states and 65947 transitions. [2021-12-22 14:40:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:40:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 202 [2021-12-22 14:40:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:05,321 INFO L225 Difference]: With dead ends: 47218 [2021-12-22 14:40:05,322 INFO L226 Difference]: Without dead ends: 26319 [2021-12-22 14:40:05,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:40:05,362 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 443 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:05,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 2919 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 14:40:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26319 states. [2021-12-22 14:40:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26319 to 24829. [2021-12-22 14:40:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24829 states, 18832 states have (on average 1.3396346644010195) internal successors, (25228), 19344 states have internal predecessors, (25228), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (4997), 3909 states have call predecessors, (4997), 3883 states have call successors, (4997) [2021-12-22 14:40:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24829 states to 24829 states and 34109 transitions. [2021-12-22 14:40:06,560 INFO L78 Accepts]: Start accepts. Automaton has 24829 states and 34109 transitions. Word has length 202 [2021-12-22 14:40:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:06,561 INFO L470 AbstractCegarLoop]: Abstraction has 24829 states and 34109 transitions. [2021-12-22 14:40:06,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-22 14:40:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 24829 states and 34109 transitions. [2021-12-22 14:40:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-22 14:40:06,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:06,575 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:40:06,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 14:40:06,576 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:06,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1114922220, now seen corresponding path program 1 times [2021-12-22 14:40:06,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:06,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861336965] [2021-12-22 14:40:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:06,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:40:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:40:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:40:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:40:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:40:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:40:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:40:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:40:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 14:40:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:40:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:40:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:40:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-22 14:40:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-12-22 14:40:06,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:06,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861336965] [2021-12-22 14:40:06,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861336965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:06,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:06,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:40:06,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097919679] [2021-12-22 14:40:06,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:06,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:40:06,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:40:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:40:06,812 INFO L87 Difference]: Start difference. First operand 24829 states and 34109 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-22 14:40:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:09,389 INFO L93 Difference]: Finished difference Result 66761 states and 96168 transitions. [2021-12-22 14:40:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:40:09,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 204 [2021-12-22 14:40:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:09,540 INFO L225 Difference]: With dead ends: 66761 [2021-12-22 14:40:09,540 INFO L226 Difference]: Without dead ends: 41967 [2021-12-22 14:40:09,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:40:09,593 INFO L933 BasicCegarLoop]: 1411 mSDtfsCounter, 1366 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 4698 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:09,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 4698 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 14:40:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41967 states. [2021-12-22 14:40:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41967 to 24889. [2021-12-22 14:40:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24889 states, 18892 states have (on average 1.338556002540758) internal successors, (25288), 19404 states have internal predecessors, (25288), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (4997), 3909 states have call predecessors, (4997), 3883 states have call successors, (4997) [2021-12-22 14:40:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24889 states to 24889 states and 34169 transitions. [2021-12-22 14:40:10,689 INFO L78 Accepts]: Start accepts. Automaton has 24889 states and 34169 transitions. Word has length 204 [2021-12-22 14:40:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:10,690 INFO L470 AbstractCegarLoop]: Abstraction has 24889 states and 34169 transitions. [2021-12-22 14:40:10,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-22 14:40:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 24889 states and 34169 transitions. [2021-12-22 14:40:10,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-22 14:40:10,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:10,701 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:40:10,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 14:40:10,702 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:10,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:10,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1099484298, now seen corresponding path program 1 times [2021-12-22 14:40:10,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:10,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629526562] [2021-12-22 14:40:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:10,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:40:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:40:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:40:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:40:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:40:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:40:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:40:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:40:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 14:40:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:40:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:40:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:40:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-22 14:40:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-22 14:40:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-12-22 14:40:10,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:10,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629526562] [2021-12-22 14:40:10,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629526562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:10,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:10,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:40:10,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276022335] [2021-12-22 14:40:10,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:10,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:40:10,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:10,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:40:10,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:40:10,960 INFO L87 Difference]: Start difference. First operand 24889 states and 34169 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 14:40:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:12,931 INFO L93 Difference]: Finished difference Result 38316 states and 52807 transitions. [2021-12-22 14:40:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:40:12,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 208 [2021-12-22 14:40:12,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:13,003 INFO L225 Difference]: With dead ends: 38316 [2021-12-22 14:40:13,003 INFO L226 Difference]: Without dead ends: 13432 [2021-12-22 14:40:13,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:40:13,067 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 657 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:13,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 3562 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 14:40:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2021-12-22 14:40:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 12493. [2021-12-22 14:40:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12493 states, 9477 states have (on average 1.3408251556399704) internal successors, (12707), 9738 states have internal predecessors, (12707), 1958 states have call successors, (1958), 926 states have call predecessors, (1958), 1057 states have return successors, (2524), 1965 states have call predecessors, (2524), 1957 states have call successors, (2524) [2021-12-22 14:40:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12493 states to 12493 states and 17189 transitions. [2021-12-22 14:40:13,690 INFO L78 Accepts]: Start accepts. Automaton has 12493 states and 17189 transitions. Word has length 208 [2021-12-22 14:40:13,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:13,690 INFO L470 AbstractCegarLoop]: Abstraction has 12493 states and 17189 transitions. [2021-12-22 14:40:13,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 14:40:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 12493 states and 17189 transitions. [2021-12-22 14:40:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-22 14:40:13,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:13,699 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:40:13,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 14:40:13,699 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1517373000, now seen corresponding path program 1 times [2021-12-22 14:40:13,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:13,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507219005] [2021-12-22 14:40:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:13,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:40:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:40:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:40:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:40:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:40:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:40:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:40:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:40:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 14:40:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:40:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:40:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:40:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-22 14:40:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-22 14:40:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-12-22 14:40:14,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:14,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507219005] [2021-12-22 14:40:14,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507219005] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:40:14,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69570806] [2021-12-22 14:40:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:14,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:40:14,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:40:14,852 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) [2021-12-22 14:40:14,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:40:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:15,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 158 conjunts are in the unsatisfiable core [2021-12-22 14:40:15,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:40:16,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-22 14:40:16,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-22 14:40:16,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-22 14:40:16,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-12-22 14:40:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 130 proven. 16 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-22 14:40:17,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:40:18,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-12-22 14:40:18,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 62 [2021-12-22 14:40:18,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2021-12-22 14:40:18,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2021-12-22 14:40:18,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-12-22 14:40:18,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2021-12-22 14:40:18,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2021-12-22 14:40:18,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 78 [2021-12-22 14:40:18,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-12-22 14:40:18,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-12-22 14:40:18,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2021-12-22 14:40:18,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 82 [2021-12-22 14:40:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-12-22 14:40:19,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69570806] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:40:19,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:40:19,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 25] total 80 [2021-12-22 14:40:19,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838640272] [2021-12-22 14:40:19,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:40:19,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-12-22 14:40:19,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:19,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-12-22 14:40:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=5977, Unknown=0, NotChecked=0, Total=6320 [2021-12-22 14:40:19,754 INFO L87 Difference]: Start difference. First operand 12493 states and 17189 transitions. Second operand has 80 states, 73 states have (on average 4.273972602739726) internal successors, (312), 61 states have internal predecessors, (312), 23 states have call successors, (71), 12 states have call predecessors, (71), 25 states have return successors, (60), 29 states have call predecessors, (60), 23 states have call successors, (60)