./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--phy--dp83640.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--phy--dp83640.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 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:39:01,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:39:01,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:39:01,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:39:01,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:39:01,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:39:01,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:39:01,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:39:01,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:39:01,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:39:01,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:39:01,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:39:01,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:39:01,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:39:01,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:39:01,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:39:01,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:39:01,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:39:01,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:39:01,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:39:01,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:39:01,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:39:01,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:39:01,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:39:01,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:39:01,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:39:01,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:39:01,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:39:01,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:39:01,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:39:01,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:39:01,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:39:01,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:39:01,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:39:01,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:39:01,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:39:01,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:39:01,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:39:01,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:39:01,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:39:01,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:39:01,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:39:01,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:39:01,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:39:01,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:39:01,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:39:01,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:39:01,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:39:01,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:39:01,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:39:01,272 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:39:01,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:39:01,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:39:01,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:39:01,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:39:01,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:39:01,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:39:01,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:39:01,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:39:01,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:39:01,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:39:01,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:39:01,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:39:01,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:39:01,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:39:01,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:39:01,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:39:01,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:39:01,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:39:01,281 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:39:01,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:39:01,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:39:01,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:39:01,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 [2021-12-22 14:39:01,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:39:01,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:39:01,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:39:01,536 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:39:01,537 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:39:01,538 INFO L432 ainManager$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--phy--dp83640.ko-entry_point.cil.out.i [2021-12-22 14:39:01,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fb5319a/6f9766b1cc784f27b304d498281d1012/FLAGd5c15f264 [2021-12-22 14:39:02,342 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:39:02,343 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--phy--dp83640.ko-entry_point.cil.out.i [2021-12-22 14:39:02,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fb5319a/6f9766b1cc784f27b304d498281d1012/FLAGd5c15f264 [2021-12-22 14:39:02,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fb5319a/6f9766b1cc784f27b304d498281d1012 [2021-12-22 14:39:02,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:39:02,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:39:02,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:39:02,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:39:02,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:39:02,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:02" (1/1) ... [2021-12-22 14:39:02,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b33d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:02, skipping insertion in model container [2021-12-22 14:39:02,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:02" (1/1) ... [2021-12-22 14:39:02,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:39:02,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:39:03,438 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--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2021-12-22 14:39:03,977 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-22 14:39:03,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:39:03,997 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:39:04,127 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--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2021-12-22 14:39:04,254 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-22 14:39:04,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:39:04,305 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:39:04,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04 WrapperNode [2021-12-22 14:39:04,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:39:04,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:39:04,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:39:04,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:39:04,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,473 INFO L137 Inliner]: procedures = 184, calls = 840, calls flagged for inlining = 74, calls inlined = 63, statements flattened = 2080 [2021-12-22 14:39:04,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:39:04,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:39:04,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:39:04,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:39:04,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:39:04,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:39:04,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:39:04,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:39:04,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (1/1) ... [2021-12-22 14:39:04,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:39:04,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:39:04,680 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 14:39:04,694 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 14:39:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2021-12-22 14:39:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2021-12-22 14:39:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 14:39:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 14:39:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2021-12-22 14:39:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2021-12-22 14:39:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-22 14:39:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-22 14:39:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2021-12-22 14:39:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2021-12-22 14:39:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:39:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:39:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:39:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-22 14:39:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-22 14:39:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2021-12-22 14:39:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2021-12-22 14:39:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-22 14:39:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-22 14:39:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2021-12-22 14:39:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2021-12-22 14:39:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:39:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:39:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-12-22 14:39:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-12-22 14:39:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2021-12-22 14:39:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2021-12-22 14:39:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2021-12-22 14:39:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2021-12-22 14:39:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2021-12-22 14:39:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2021-12-22 14:39:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-22 14:39:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-22 14:39:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:39:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:39:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2021-12-22 14:39:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2021-12-22 14:39:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2021-12-22 14:39:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2021-12-22 14:39:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-22 14:39:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-22 14:39:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-22 14:39:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-22 14:39:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:39:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:39:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:39:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:39:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:39:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2021-12-22 14:39:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2021-12-22 14:39:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:39:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:39:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2021-12-22 14:39:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2021-12-22 14:39:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:39:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:39:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:39:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:39:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:39:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2021-12-22 14:39:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2021-12-22 14:39:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:39:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:39:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-22 14:39:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-22 14:39:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:39:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2021-12-22 14:39:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2021-12-22 14:39:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:39:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:39:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-22 14:39:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-22 14:39:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-22 14:39:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2021-12-22 14:39:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2021-12-22 14:39:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-22 14:39:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-22 14:39:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:39:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-22 14:39:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-22 14:39:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-22 14:39:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-22 14:39:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-22 14:39:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-22 14:39:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-22 14:39:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:39:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:39:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2021-12-22 14:39:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2021-12-22 14:39:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2021-12-22 14:39:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2021-12-22 14:39:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-22 14:39:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-22 14:39:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2021-12-22 14:39:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2021-12-22 14:39:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-22 14:39:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-22 14:39:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:39:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:39:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-22 14:39:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-22 14:39:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:39:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:39:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2021-12-22 14:39:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2021-12-22 14:39:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2021-12-22 14:39:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2021-12-22 14:39:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2021-12-22 14:39:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2021-12-22 14:39:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-22 14:39:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-22 14:39:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:39:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:39:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:39:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:39:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:39:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:39:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2021-12-22 14:39:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2021-12-22 14:39:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2021-12-22 14:39:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2021-12-22 14:39:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:39:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2021-12-22 14:39:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2021-12-22 14:39:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:39:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:39:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-22 14:39:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-22 14:39:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:39:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:39:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2021-12-22 14:39:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2021-12-22 14:39:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2021-12-22 14:39:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2021-12-22 14:39:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:39:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:39:05,150 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:39:05,152 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:39:05,500 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:39:06,744 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:39:06,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:39:06,763 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-22 14:39:06,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:06 BoogieIcfgContainer [2021-12-22 14:39:06,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:39:06,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:39:06,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:39:06,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:39:06,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:39:02" (1/3) ... [2021-12-22 14:39:06,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3548e926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:06, skipping insertion in model container [2021-12-22 14:39:06,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:04" (2/3) ... [2021-12-22 14:39:06,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3548e926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:06, skipping insertion in model container [2021-12-22 14:39:06,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:06" (3/3) ... [2021-12-22 14:39:06,774 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2021-12-22 14:39:06,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:39:06,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:39:06,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:39:06,836 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 14:39:06,837 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:39:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 826 states, 571 states have (on average 1.3134851138353765) internal successors, (750), 588 states have internal predecessors, (750), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2021-12-22 14:39:06,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 14:39:06,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:06,878 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:39:06,879 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1130854638, now seen corresponding path program 1 times [2021-12-22 14:39:06,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:06,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905924078] [2021-12-22 14:39:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:06,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:39:07,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:07,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905924078] [2021-12-22 14:39:07,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905924078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:07,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:07,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:07,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519579896] [2021-12-22 14:39:07,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:07,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:07,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:07,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:07,402 INFO L87 Difference]: Start difference. First operand has 826 states, 571 states have (on average 1.3134851138353765) internal successors, (750), 588 states have internal predecessors, (750), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 14:39:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:10,627 INFO L93 Difference]: Finished difference Result 2630 states and 3786 transitions. [2021-12-22 14:39:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:39:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-22 14:39:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:10,657 INFO L225 Difference]: With dead ends: 2630 [2021-12-22 14:39:10,658 INFO L226 Difference]: Without dead ends: 1763 [2021-12-22 14:39:10,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 14:39:10,670 INFO L933 BasicCegarLoop]: 1228 mSDtfsCounter, 1569 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4550 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:10,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 4550 Invalid, 2198 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [583 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-22 14:39:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-12-22 14:39:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1601. [2021-12-22 14:39:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1111 states have (on average 1.297929792979298) internal successors, (1442), 1136 states have internal predecessors, (1442), 370 states have call successors, (370), 118 states have call predecessors, (370), 119 states have return successors, (383), 368 states have call predecessors, (383), 369 states have call successors, (383) [2021-12-22 14:39:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2195 transitions. [2021-12-22 14:39:10,877 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2195 transitions. Word has length 32 [2021-12-22 14:39:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:10,878 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2195 transitions. [2021-12-22 14:39:10,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 14:39:10,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2195 transitions. [2021-12-22 14:39:10,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-22 14:39:10,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:10,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:10,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:39:10,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:10,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1456852114, now seen corresponding path program 1 times [2021-12-22 14:39:10,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:10,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151490140] [2021-12-22 14:39:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:10,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 14:39:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:39:11,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:11,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151490140] [2021-12-22 14:39:11,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151490140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:11,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:11,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:11,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112925099] [2021-12-22 14:39:11,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:11,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:11,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:11,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:11,151 INFO L87 Difference]: Start difference. First operand 1601 states and 2195 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:39:14,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:15,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:15,229 INFO L93 Difference]: Finished difference Result 3585 states and 5064 transitions. [2021-12-22 14:39:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:39:15,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2021-12-22 14:39:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:15,245 INFO L225 Difference]: With dead ends: 3585 [2021-12-22 14:39:15,245 INFO L226 Difference]: Without dead ends: 1992 [2021-12-22 14:39:15,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:39:15,252 INFO L933 BasicCegarLoop]: 1064 mSDtfsCounter, 1016 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:15,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 2456 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-22 14:39:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-12-22 14:39:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1702. [2021-12-22 14:39:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1188 states have (on average 1.2971380471380471) internal successors, (1541), 1216 states have internal predecessors, (1541), 382 states have call successors, (382), 127 states have call predecessors, (382), 131 states have return successors, (401), 380 states have call predecessors, (401), 381 states have call successors, (401) [2021-12-22 14:39:15,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2324 transitions. [2021-12-22 14:39:15,330 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2324 transitions. Word has length 77 [2021-12-22 14:39:15,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:15,331 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 2324 transitions. [2021-12-22 14:39:15,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:39:15,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2324 transitions. [2021-12-22 14:39:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 14:39:15,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:15,335 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-22 14:39:15,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:39:15,336 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:15,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:15,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1040348853, now seen corresponding path program 1 times [2021-12-22 14:39:15,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:15,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265695250] [2021-12-22 14:39:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:15,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 14:39:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 14:39:15,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:15,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265695250] [2021-12-22 14:39:15,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265695250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:15,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:15,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:15,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891969636] [2021-12-22 14:39:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:15,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:15,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:15,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:15,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:15,562 INFO L87 Difference]: Start difference. First operand 1702 states and 2324 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:39:19,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:19,379 INFO L93 Difference]: Finished difference Result 5174 states and 7332 transitions. [2021-12-22 14:39:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:39:19,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 101 [2021-12-22 14:39:19,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:19,398 INFO L225 Difference]: With dead ends: 5174 [2021-12-22 14:39:19,398 INFO L226 Difference]: Without dead ends: 3501 [2021-12-22 14:39:19,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:19,410 INFO L933 BasicCegarLoop]: 1189 mSDtfsCounter, 2523 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 3434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:19,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2684 Valid, 2458 Invalid, 3434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-22 14:39:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-12-22 14:39:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2946. [2021-12-22 14:39:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2072 states have (on average 1.2866795366795367) internal successors, (2666), 2114 states have internal predecessors, (2666), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2021-12-22 14:39:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 3953 transitions. [2021-12-22 14:39:19,556 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 3953 transitions. Word has length 101 [2021-12-22 14:39:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:19,558 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 3953 transitions. [2021-12-22 14:39:19,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:39:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 3953 transitions. [2021-12-22 14:39:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 14:39:19,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:19,565 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-22 14:39:19,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:39:19,565 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2025083819, now seen corresponding path program 1 times [2021-12-22 14:39:19,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:19,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439731361] [2021-12-22 14:39:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:19,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:39:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-22 14:39:19,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:19,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439731361] [2021-12-22 14:39:19,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439731361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:19,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:19,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:19,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411758249] [2021-12-22 14:39:19,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:19,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:19,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:19,797 INFO L87 Difference]: Start difference. First operand 2946 states and 3953 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-22 14:39:23,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:23,728 INFO L93 Difference]: Finished difference Result 5025 states and 7069 transitions. [2021-12-22 14:39:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:39:23,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 101 [2021-12-22 14:39:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:23,749 INFO L225 Difference]: With dead ends: 5025 [2021-12-22 14:39:23,749 INFO L226 Difference]: Without dead ends: 3496 [2021-12-22 14:39:23,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:39:23,757 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 908 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 795 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:23,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 2424 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [795 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-22 14:39:23,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-12-22 14:39:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2950. [2021-12-22 14:39:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2076 states have (on average 1.2861271676300579) internal successors, (2670), 2118 states have internal predecessors, (2670), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2021-12-22 14:39:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3957 transitions. [2021-12-22 14:39:23,937 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3957 transitions. Word has length 101 [2021-12-22 14:39:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:23,937 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 3957 transitions. [2021-12-22 14:39:23,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-22 14:39:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3957 transitions. [2021-12-22 14:39:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 14:39:23,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:23,943 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-22 14:39:23,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:39:23,944 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash -383645622, now seen corresponding path program 1 times [2021-12-22 14:39:23,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:23,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549765066] [2021-12-22 14:39:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:23,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:39:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-22 14:39:24,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:24,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549765066] [2021-12-22 14:39:24,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549765066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:24,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:24,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 14:39:24,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623887837] [2021-12-22 14:39:24,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:24,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 14:39:24,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 14:39:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:39:24,235 INFO L87 Difference]: Start difference. First operand 2950 states and 3957 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:39:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:31,816 INFO L93 Difference]: Finished difference Result 7117 states and 9910 transitions. [2021-12-22 14:39:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 14:39:31,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2021-12-22 14:39:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:31,839 INFO L225 Difference]: With dead ends: 7117 [2021-12-22 14:39:31,839 INFO L226 Difference]: Without dead ends: 4196 [2021-12-22 14:39:31,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-12-22 14:39:31,850 INFO L933 BasicCegarLoop]: 1150 mSDtfsCounter, 2286 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 7476 mSolverCounterSat, 1290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 8766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1290 IncrementalHoareTripleChecker+Valid, 7476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:31,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2560 Valid, 4344 Invalid, 8766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1290 Valid, 7476 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-12-22 14:39:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2021-12-22 14:39:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3490. [2021-12-22 14:39:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 2456 states have (on average 1.278501628664495) internal successors, (3140), 2506 states have internal predecessors, (3140), 752 states have call successors, (752), 276 states have call predecessors, (752), 281 states have return successors, (777), 745 states have call predecessors, (777), 751 states have call successors, (777) [2021-12-22 14:39:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 4669 transitions. [2021-12-22 14:39:32,008 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 4669 transitions. Word has length 103 [2021-12-22 14:39:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:32,009 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 4669 transitions. [2021-12-22 14:39:32,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:39:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 4669 transitions. [2021-12-22 14:39:32,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-22 14:39:32,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:32,016 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:32,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:39:32,016 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:32,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:32,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1730679408, now seen corresponding path program 1 times [2021-12-22 14:39:32,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:32,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819392063] [2021-12-22 14:39:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:32,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:39:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:39:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:39:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:39:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-22 14:39:32,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:32,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819392063] [2021-12-22 14:39:32,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819392063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:32,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:32,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:39:32,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164591717] [2021-12-22 14:39:32,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:32,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:39:32,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:32,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:39:32,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:39:32,399 INFO L87 Difference]: Start difference. First operand 3490 states and 4669 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:39:36,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:36,155 INFO L93 Difference]: Finished difference Result 7571 states and 10519 transitions. [2021-12-22 14:39:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:39:36,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 129 [2021-12-22 14:39:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:36,183 INFO L225 Difference]: With dead ends: 7571 [2021-12-22 14:39:36,183 INFO L226 Difference]: Without dead ends: 4110 [2021-12-22 14:39:36,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:39:36,197 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 873 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 3957 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:36,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 3957 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-22 14:39:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-12-22 14:39:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3518. [2021-12-22 14:39:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 2476 states have (on average 1.2762520193861067) internal successors, (3160), 2528 states have internal predecessors, (3160), 752 states have call successors, (752), 276 states have call predecessors, (752), 289 states have return successors, (789), 751 states have call predecessors, (789), 751 states have call successors, (789) [2021-12-22 14:39:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 4701 transitions. [2021-12-22 14:39:36,378 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 4701 transitions. Word has length 129 [2021-12-22 14:39:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:36,379 INFO L470 AbstractCegarLoop]: Abstraction has 3518 states and 4701 transitions. [2021-12-22 14:39:36,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:39:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 4701 transitions. [2021-12-22 14:39:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-22 14:39:36,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:36,388 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2021-12-22 14:39:36,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:39:36,388 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1502778086, now seen corresponding path program 1 times [2021-12-22 14:39:36,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:36,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785469333] [2021-12-22 14:39:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:36,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:39:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:39:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:39:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 14:39:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:39:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:39:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-22 14:39:36,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:36,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785469333] [2021-12-22 14:39:36,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785469333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:36,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:36,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:36,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803919298] [2021-12-22 14:39:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:36,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:36,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:36,720 INFO L87 Difference]: Start difference. First operand 3518 states and 4701 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 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 14:39:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:39,537 INFO L93 Difference]: Finished difference Result 7580 states and 10454 transitions. [2021-12-22 14:39:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:39:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 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 150 [2021-12-22 14:39:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:39,562 INFO L225 Difference]: With dead ends: 7580 [2021-12-22 14:39:39,562 INFO L226 Difference]: Without dead ends: 4078 [2021-12-22 14:39:39,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:39,577 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 1875 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:39,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2004 Valid, 1756 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-22 14:39:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2021-12-22 14:39:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3494. [2021-12-22 14:39:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 2454 states have (on average 1.2709861450692748) internal successors, (3119), 2506 states have internal predecessors, (3119), 750 states have call successors, (750), 276 states have call predecessors, (750), 289 states have return successors, (785), 749 states have call predecessors, (785), 749 states have call successors, (785) [2021-12-22 14:39:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 4654 transitions. [2021-12-22 14:39:39,788 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 4654 transitions. Word has length 150 [2021-12-22 14:39:39,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:39,789 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 4654 transitions. [2021-12-22 14:39:39,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 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 14:39:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 4654 transitions. [2021-12-22 14:39:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-22 14:39:39,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:39,797 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:39:39,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:39:39,798 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1027987929, now seen corresponding path program 1 times [2021-12-22 14:39:39,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:39,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137752647] [2021-12-22 14:39:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:39,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:39:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:39:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:39:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 14:39:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:39:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:39:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:39:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 14:39:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-22 14:39:40,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:40,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137752647] [2021-12-22 14:39:40,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137752647] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:39:40,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134380226] [2021-12-22 14:39:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:40,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:39:40,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:39:40,231 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 14:39:40,261 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 14:39:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:40,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 14:39:40,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:39:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 14:39:41,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:39:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-22 14:39:41,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134380226] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-22 14:39:41,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:39:41,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 8] total 22 [2021-12-22 14:39:41,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616582984] [2021-12-22 14:39:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:41,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:39:41,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:39:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-12-22 14:39:41,953 INFO L87 Difference]: Start difference. First operand 3494 states and 4654 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-22 14:39:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:45,978 INFO L93 Difference]: Finished difference Result 8206 states and 11201 transitions. [2021-12-22 14:39:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 14:39:45,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 158 [2021-12-22 14:39:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:46,008 INFO L225 Difference]: With dead ends: 8206 [2021-12-22 14:39:46,009 INFO L226 Difference]: Without dead ends: 6126 [2021-12-22 14:39:46,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 336 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2021-12-22 14:39:46,019 INFO L933 BasicCegarLoop]: 1612 mSDtfsCounter, 4175 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 2018 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 5833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2018 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:46,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4308 Valid, 3524 Invalid, 5833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2018 Valid, 3815 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-22 14:39:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2021-12-22 14:39:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 5092. [2021-12-22 14:39:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 3569 states have (on average 1.2729055757915382) internal successors, (4543), 3652 states have internal predecessors, (4543), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-12-22 14:39:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 6835 transitions. [2021-12-22 14:39:46,353 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 6835 transitions. Word has length 158 [2021-12-22 14:39:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:46,354 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 6835 transitions. [2021-12-22 14:39:46,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-22 14:39:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 6835 transitions. [2021-12-22 14:39:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-22 14:39:46,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:46,363 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:39:46,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 14:39:46,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:39:46,575 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1503595608, now seen corresponding path program 1 times [2021-12-22 14:39:46,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:46,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589383325] [2021-12-22 14:39:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:46,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:39:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:39:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:39:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 14:39:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:39:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:39:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 14:39:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 14:39:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-22 14:39:46,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:46,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589383325] [2021-12-22 14:39:46,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589383325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:46,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:46,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:39:46,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002653155] [2021-12-22 14:39:46,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:46,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:39:46,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:39:46,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:39:46,856 INFO L87 Difference]: Start difference. First operand 5092 states and 6835 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:39:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:49,558 INFO L93 Difference]: Finished difference Result 9609 states and 13438 transitions. [2021-12-22 14:39:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:39:49,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-22 14:39:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:49,589 INFO L225 Difference]: With dead ends: 9609 [2021-12-22 14:39:49,589 INFO L226 Difference]: Without dead ends: 5931 [2021-12-22 14:39:49,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:39:49,605 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 624 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:49,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 3199 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 14:39:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5931 states. [2021-12-22 14:39:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5931 to 5090. [2021-12-22 14:39:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 3567 states have (on average 1.271937202130642) internal successors, (4537), 3650 states have internal predecessors, (4537), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-12-22 14:39:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 6829 transitions. [2021-12-22 14:39:49,936 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 6829 transitions. Word has length 160 [2021-12-22 14:39:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:49,937 INFO L470 AbstractCegarLoop]: Abstraction has 5090 states and 6829 transitions. [2021-12-22 14:39:49,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:39:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 6829 transitions. [2021-12-22 14:39:49,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-22 14:39:49,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:49,947 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:39:49,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:39:49,947 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:49,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1513318799, now seen corresponding path program 1 times [2021-12-22 14:39:49,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:49,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232872379] [2021-12-22 14:39:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:49,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:39:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:39:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:39:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 14:39:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:39:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:39:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 14:39:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:39:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-22 14:39:50,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:50,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232872379] [2021-12-22 14:39:50,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232872379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:50,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:50,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:39:50,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445950376] [2021-12-22 14:39:50,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:50,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:39:50,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:39:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:39:50,281 INFO L87 Difference]: Start difference. First operand 5090 states and 6829 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, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:39:53,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:55,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:55,942 INFO L93 Difference]: Finished difference Result 11009 states and 15299 transitions. [2021-12-22 14:39:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:39:55,943 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, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2021-12-22 14:39:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:55,971 INFO L225 Difference]: With dead ends: 11009 [2021-12-22 14:39:55,972 INFO L226 Difference]: Without dead ends: 5971 [2021-12-22 14:39:55,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:39:55,993 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 345 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:55,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 3486 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-22 14:39:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2021-12-22 14:39:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5102. [2021-12-22 14:39:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 3579 states have (on average 1.2710254260966751) internal successors, (4549), 3662 states have internal predecessors, (4549), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-12-22 14:39:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 6841 transitions. [2021-12-22 14:39:56,310 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 6841 transitions. Word has length 162 [2021-12-22 14:39:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:56,311 INFO L470 AbstractCegarLoop]: Abstraction has 5102 states and 6841 transitions. [2021-12-22 14:39:56,311 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, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:39:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 6841 transitions. [2021-12-22 14:39:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-22 14:39:56,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:56,321 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:39:56,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 14:39:56,322 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1008301203, now seen corresponding path program 1 times [2021-12-22 14:39:56,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:56,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480205374] [2021-12-22 14:39:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:56,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat