./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.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 4e0b4bb78430cd3ff87fa852dcd49e649016647ef60f492a14a048040c1b0a8a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:55:33,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:55:33,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:55:33,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:55:33,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:55:33,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:55:33,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:55:33,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:55:33,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:55:33,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:55:33,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:55:33,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:55:33,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:55:33,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:55:33,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:55:33,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:55:33,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:55:33,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:55:33,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:55:33,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:55:33,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:55:33,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:55:33,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:55:33,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:55:33,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:55:33,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:55:33,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:55:33,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:55:33,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:55:33,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:55:33,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:55:33,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:55:33,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:55:33,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:55:33,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:55:33,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:55:33,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:55:33,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:55:33,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:55:33,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:55:33,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:55:33,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:55:33,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:55:33,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:55:33,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:55:33,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:55:33,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:55:33,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:55:33,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:55:33,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:55:33,693 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:55:33,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:55:33,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:55:33,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:55:33,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:55:33,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:55:33,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:55:33,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:55:33,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:55:33,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:55:33,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:55:33,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:55:33,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:55:33,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:55:33,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:55:33,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:55:33,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:55:33,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:55:33,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:55:33,697 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:55:33,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:55:33,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:55:33,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0b4bb78430cd3ff87fa852dcd49e649016647ef60f492a14a048040c1b0a8a [2021-12-28 03:55:34,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:55:34,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:55:34,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:55:34,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:55:34,054 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:55:34,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i [2021-12-28 03:55:34,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be78c7e2/3ccf10fb803e46b8aabd6386a379f398/FLAG50e039f69 [2021-12-28 03:55:34,763 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:55:34,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i [2021-12-28 03:55:34,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be78c7e2/3ccf10fb803e46b8aabd6386a379f398/FLAG50e039f69 [2021-12-28 03:55:35,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be78c7e2/3ccf10fb803e46b8aabd6386a379f398 [2021-12-28 03:55:35,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:55:35,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:55:35,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:55:35,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:55:35,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:55:35,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:55:35" (1/1) ... [2021-12-28 03:55:35,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726f6b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:35, skipping insertion in model container [2021-12-28 03:55:35,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:55:35" (1/1) ... [2021-12-28 03:55:35,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:55:35,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:55:35,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i[152066,152079] [2021-12-28 03:55:36,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:55:36,373 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:55:36,495 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i[152066,152079] [2021-12-28 03:55:36,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:55:36,885 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:55:36,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36 WrapperNode [2021-12-28 03:55:36,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:55:36,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:55:36,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:55:36,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:55:36,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:36,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,006 INFO L137 Inliner]: procedures = 141, calls = 724, calls flagged for inlining = 69, calls inlined = 55, statements flattened = 1676 [2021-12-28 03:55:37,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:55:37,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:55:37,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:55:37,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:55:37,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:55:37,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:55:37,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:55:37,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:55:37,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (1/1) ... [2021-12-28 03:55:37,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:55:37,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:55:37,189 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) [2021-12-28 03:55:37,212 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 [2021-12-28 03:55:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 03:55:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 03:55:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:55:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure sja1000_write_cmdreg [2021-12-28 03:55:37,229 INFO L138 BoogieDeclarations]: Found implementation of procedure sja1000_write_cmdreg [2021-12-28 03:55:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-28 03:55:37,229 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-28 03:55:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-28 03:55:37,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-28 03:55:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u8~0~TO~VOID [2021-12-28 03:55:37,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u8~0~TO~VOID [2021-12-28 03:55:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:55:37,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:55:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:55:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure set_reset_mode [2021-12-28 03:55:37,231 INFO L138 BoogieDeclarations]: Found implementation of procedure set_reset_mode [2021-12-28 03:55:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:55:37,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:55:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:55:37,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:55:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~~u8~0 [2021-12-28 03:55:37,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~~u8~0 [2021-12-28 03:55:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:55:37,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:55:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure sja1000_is_absent [2021-12-28 03:55:37,232 INFO L138 BoogieDeclarations]: Found implementation of procedure sja1000_is_absent [2021-12-28 03:55:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-28 03:55:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-28 03:55:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:55:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:55:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:55:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-12-28 03:55:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-12-28 03:55:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:55:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-28 03:55:37,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-28 03:55:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:55:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:55:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-28 03:55:37,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-28 03:55:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:55:37,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:55:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:55:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-28 03:55:37,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-28 03:55:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2021-12-28 03:55:37,236 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2021-12-28 03:55:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:55:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:55:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 03:55:37,237 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 03:55:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 03:55:37,238 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 03:55:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-12-28 03:55:37,238 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-12-28 03:55:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:55:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure sja1000_start [2021-12-28 03:55:37,239 INFO L138 BoogieDeclarations]: Found implementation of procedure sja1000_start [2021-12-28 03:55:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 03:55:37,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 03:55:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:55:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:55:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure can_change_mtu [2021-12-28 03:55:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure can_change_mtu [2021-12-28 03:55:37,668 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:55:37,672 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:55:38,302 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 03:55:38,793 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:55:38,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:55:38,805 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 03:55:38,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:55:38 BoogieIcfgContainer [2021-12-28 03:55:38,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:55:38,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:55:38,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:55:38,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:55:38,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:55:35" (1/3) ... [2021-12-28 03:55:38,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573d434f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:55:38, skipping insertion in model container [2021-12-28 03:55:38,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:36" (2/3) ... [2021-12-28 03:55:38,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573d434f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:55:38, skipping insertion in model container [2021-12-28 03:55:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:55:38" (3/3) ... [2021-12-28 03:55:38,814 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i [2021-12-28 03:55:38,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:55:38,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:55:38,862 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:55:38,867 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 [2021-12-28 03:55:38,868 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:55:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 511 states, 371 states have (on average 1.3557951482479784) internal successors, (503), 382 states have internal predecessors, (503), 113 states have call successors, (113), 26 states have call predecessors, (113), 25 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-28 03:55:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 03:55:38,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:38,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:38,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 191472402, now seen corresponding path program 1 times [2021-12-28 03:55:38,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:38,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536445357] [2021-12-28 03:55:38,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:38,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:55:39,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:39,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536445357] [2021-12-28 03:55:39,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536445357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:39,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:39,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:55:39,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798616102] [2021-12-28 03:55:39,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:39,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:55:39,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:39,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:55:39,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:55:39,306 INFO L87 Difference]: Start difference. First operand has 511 states, 371 states have (on average 1.3557951482479784) internal successors, (503), 382 states have internal predecessors, (503), 113 states have call successors, (113), 26 states have call predecessors, (113), 25 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:55:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:40,986 INFO L93 Difference]: Finished difference Result 1593 states and 2306 transitions. [2021-12-28 03:55:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:55:40,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-28 03:55:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:41,018 INFO L225 Difference]: With dead ends: 1593 [2021-12-28 03:55:41,019 INFO L226 Difference]: Without dead ends: 1069 [2021-12-28 03:55:41,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:55:41,040 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 859 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:41,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 1525 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 03:55:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-12-28 03:55:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 973. [2021-12-28 03:55:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 713 states have (on average 1.329593267882188) internal successors, (948), 721 states have internal predecessors, (948), 212 states have call successors, (212), 48 states have call predecessors, (212), 47 states have return successors, (211), 209 states have call predecessors, (211), 211 states have call successors, (211) [2021-12-28 03:55:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1371 transitions. [2021-12-28 03:55:41,186 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1371 transitions. Word has length 22 [2021-12-28 03:55:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:41,186 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1371 transitions. [2021-12-28 03:55:41,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:55:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1371 transitions. [2021-12-28 03:55:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 03:55:41,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:41,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:41,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:55:41,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:41,191 INFO L85 PathProgramCache]: Analyzing trace with hash 824111555, now seen corresponding path program 1 times [2021-12-28 03:55:41,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:41,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645580005] [2021-12-28 03:55:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:41,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:41,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:55:41,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:41,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645580005] [2021-12-28 03:55:41,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645580005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:41,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:41,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:55:41,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743156170] [2021-12-28 03:55:41,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:41,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:55:41,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:55:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:55:41,378 INFO L87 Difference]: Start difference. First operand 973 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:55:42,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:42,478 INFO L93 Difference]: Finished difference Result 2035 states and 2876 transitions. [2021-12-28 03:55:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:55:42,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-28 03:55:42,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:42,486 INFO L225 Difference]: With dead ends: 2035 [2021-12-28 03:55:42,486 INFO L226 Difference]: Without dead ends: 1068 [2021-12-28 03:55:42,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:55:42,491 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 937 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:42,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 1789 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 03:55:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-12-28 03:55:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 972. [2021-12-28 03:55:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 712 states have (on average 1.3258426966292134) internal successors, (944), 720 states have internal predecessors, (944), 212 states have call successors, (212), 48 states have call predecessors, (212), 47 states have return successors, (211), 209 states have call predecessors, (211), 211 states have call successors, (211) [2021-12-28 03:55:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1367 transitions. [2021-12-28 03:55:42,552 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1367 transitions. Word has length 25 [2021-12-28 03:55:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:42,552 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1367 transitions. [2021-12-28 03:55:42,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:55:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1367 transitions. [2021-12-28 03:55:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-28 03:55:42,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:42,556 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:55:42,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:55:42,556 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:42,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash 395295294, now seen corresponding path program 1 times [2021-12-28 03:55:42,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:42,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174958699] [2021-12-28 03:55:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:42,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:42,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:55:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-28 03:55:42,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:42,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174958699] [2021-12-28 03:55:42,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174958699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:42,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:42,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:55:42,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695682806] [2021-12-28 03:55:42,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:42,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:55:42,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:55:42,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:55:42,678 INFO L87 Difference]: Start difference. First operand 972 states and 1367 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:55:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:44,389 INFO L93 Difference]: Finished difference Result 2116 states and 3022 transitions. [2021-12-28 03:55:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:55:44,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2021-12-28 03:55:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:44,402 INFO L225 Difference]: With dead ends: 2116 [2021-12-28 03:55:44,402 INFO L226 Difference]: Without dead ends: 2109 [2021-12-28 03:55:44,404 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 [2021-12-28 03:55:44,405 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 837 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:44,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 2567 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 03:55:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-12-28 03:55:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1927. [2021-12-28 03:55:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1408 states have (on average 1.3274147727272727) internal successors, (1869), 1426 states have internal predecessors, (1869), 422 states have call successors, (422), 95 states have call predecessors, (422), 96 states have return successors, (447), 417 states have call predecessors, (447), 421 states have call successors, (447) [2021-12-28 03:55:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2738 transitions. [2021-12-28 03:55:44,504 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2738 transitions. Word has length 39 [2021-12-28 03:55:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:44,504 INFO L470 AbstractCegarLoop]: Abstraction has 1927 states and 2738 transitions. [2021-12-28 03:55:44,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:55:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2738 transitions. [2021-12-28 03:55:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-28 03:55:44,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:44,511 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 03:55:44,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:55:44,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash 865162911, now seen corresponding path program 1 times [2021-12-28 03:55:44,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005841204] [2021-12-28 03:55:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:44,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:44,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:44,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:55:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:55:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:44,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:55:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-28 03:55:44,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:44,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005841204] [2021-12-28 03:55:44,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005841204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:44,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:44,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:55:44,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717804785] [2021-12-28 03:55:44,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:44,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:55:44,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:55:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:55:44,655 INFO L87 Difference]: Start difference. First operand 1927 states and 2738 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 03:55:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:46,541 INFO L93 Difference]: Finished difference Result 4756 states and 6804 transitions. [2021-12-28 03:55:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:55:46,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 75 [2021-12-28 03:55:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:46,558 INFO L225 Difference]: With dead ends: 4756 [2021-12-28 03:55:46,558 INFO L226 Difference]: Without dead ends: 2835 [2021-12-28 03:55:46,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:55:46,568 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1014 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:46,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 1630 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 03:55:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-12-28 03:55:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2337. [2021-12-28 03:55:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 1727 states have (on average 1.3184713375796178) internal successors, (2277), 1749 states have internal predecessors, (2277), 472 states have call successors, (472), 122 states have call predecessors, (472), 137 states have return successors, (532), 479 states have call predecessors, (532), 471 states have call successors, (532) [2021-12-28 03:55:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3281 transitions. [2021-12-28 03:55:46,684 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3281 transitions. Word has length 75 [2021-12-28 03:55:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:46,684 INFO L470 AbstractCegarLoop]: Abstraction has 2337 states and 3281 transitions. [2021-12-28 03:55:46,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 03:55:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3281 transitions. [2021-12-28 03:55:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-28 03:55:46,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:46,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 03:55:46,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:55:46,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:46,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:46,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1950464579, now seen corresponding path program 2 times [2021-12-28 03:55:46,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:46,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488429752] [2021-12-28 03:55:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:46,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:55:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:46,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:55:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:55:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:46,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:55:46,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:46,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488429752] [2021-12-28 03:55:46,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488429752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:46,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:46,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:55:46,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306519048] [2021-12-28 03:55:46,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:46,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:55:46,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:46,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:55:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:55:46,824 INFO L87 Difference]: Start difference. First operand 2337 states and 3281 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 03:55:49,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:49,038 INFO L93 Difference]: Finished difference Result 5332 states and 7628 transitions. [2021-12-28 03:55:49,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:55:49,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 75 [2021-12-28 03:55:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:49,063 INFO L225 Difference]: With dead ends: 5332 [2021-12-28 03:55:49,063 INFO L226 Difference]: Without dead ends: 3649 [2021-12-28 03:55:49,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:55:49,077 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 772 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:49,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 2250 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 03:55:49,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2021-12-28 03:55:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3008. [2021-12-28 03:55:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 2234 states have (on average 1.3196060877350044) internal successors, (2948), 2262 states have internal predecessors, (2948), 595 states have call successors, (595), 158 states have call predecessors, (595), 178 states have return successors, (673), 605 states have call predecessors, (673), 594 states have call successors, (673) [2021-12-28 03:55:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4216 transitions. [2021-12-28 03:55:49,225 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4216 transitions. Word has length 75 [2021-12-28 03:55:49,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:49,225 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4216 transitions. [2021-12-28 03:55:49,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 03:55:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4216 transitions. [2021-12-28 03:55:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-28 03:55:49,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:49,236 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-28 03:55:49,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:55:49,236 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:49,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1867198755, now seen corresponding path program 1 times [2021-12-28 03:55:49,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:49,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500178061] [2021-12-28 03:55:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:49,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:55:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:49,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:55:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:55:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:49,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 03:55:49,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:49,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500178061] [2021-12-28 03:55:49,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500178061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:49,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:49,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:55:49,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128423832] [2021-12-28 03:55:49,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:49,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:55:49,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:49,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:55:49,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:55:49,447 INFO L87 Difference]: Start difference. First operand 3008 states and 4216 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 03:55:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:51,483 INFO L93 Difference]: Finished difference Result 6829 states and 9736 transitions. [2021-12-28 03:55:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:55:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2021-12-28 03:55:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:51,512 INFO L225 Difference]: With dead ends: 6829 [2021-12-28 03:55:51,513 INFO L226 Difference]: Without dead ends: 4475 [2021-12-28 03:55:51,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:55:51,529 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 882 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:51,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 2249 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 03:55:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2021-12-28 03:55:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 3691. [2021-12-28 03:55:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2749 states have (on average 1.3193888686795199) internal successors, (3627), 2783 states have internal predecessors, (3627), 718 states have call successors, (718), 198 states have call predecessors, (718), 223 states have return successors, (814), 731 states have call predecessors, (814), 717 states have call successors, (814) [2021-12-28 03:55:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 5159 transitions. [2021-12-28 03:55:51,713 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 5159 transitions. Word has length 88 [2021-12-28 03:55:51,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:51,716 INFO L470 AbstractCegarLoop]: Abstraction has 3691 states and 5159 transitions. [2021-12-28 03:55:51,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 03:55:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 5159 transitions. [2021-12-28 03:55:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 03:55:51,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:51,732 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:51,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:55:51,733 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:51,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:51,733 INFO L85 PathProgramCache]: Analyzing trace with hash -845511377, now seen corresponding path program 1 times [2021-12-28 03:55:51,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:51,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558736534] [2021-12-28 03:55:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:51,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:55:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:55:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:55:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:55:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:55:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:55:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:55:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 03:55:51,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:51,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558736534] [2021-12-28 03:55:51,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558736534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:51,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:51,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:55:51,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28155520] [2021-12-28 03:55:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:51,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:55:51,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:55:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:55:51,923 INFO L87 Difference]: Start difference. First operand 3691 states and 5159 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-28 03:55:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:53,599 INFO L93 Difference]: Finished difference Result 8242 states and 11825 transitions. [2021-12-28 03:55:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:55:53,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 127 [2021-12-28 03:55:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:53,624 INFO L225 Difference]: With dead ends: 8242 [2021-12-28 03:55:53,624 INFO L226 Difference]: Without dead ends: 4564 [2021-12-28 03:55:53,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:55:53,655 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 364 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:53,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1991 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 03:55:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-12-28 03:55:53,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3701. [2021-12-28 03:55:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3701 states, 2759 states have (on average 1.3182312432040595) internal successors, (3637), 2793 states have internal predecessors, (3637), 718 states have call successors, (718), 198 states have call predecessors, (718), 223 states have return successors, (814), 731 states have call predecessors, (814), 717 states have call successors, (814) [2021-12-28 03:55:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 5169 transitions. [2021-12-28 03:55:53,897 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 5169 transitions. Word has length 127 [2021-12-28 03:55:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:53,897 INFO L470 AbstractCegarLoop]: Abstraction has 3701 states and 5169 transitions. [2021-12-28 03:55:53,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-28 03:55:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 5169 transitions. [2021-12-28 03:55:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:55:53,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:53,909 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:53,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:55:53,910 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:53,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash -310397959, now seen corresponding path program 1 times [2021-12-28 03:55:53,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:53,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668339389] [2021-12-28 03:55:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:53,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:55:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:55:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:55:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:55:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:55:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 03:55:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:55:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:55:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:55:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 03:55:54,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:54,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668339389] [2021-12-28 03:55:54,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668339389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:54,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:54,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:55:54,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918087831] [2021-12-28 03:55:54,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:54,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:55:54,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:55:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:55:54,180 INFO L87 Difference]: Start difference. First operand 3701 states and 5169 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 03:55:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:56,937 INFO L93 Difference]: Finished difference Result 11564 states and 16600 transitions. [2021-12-28 03:55:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:55:56,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 130 [2021-12-28 03:55:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:56,980 INFO L225 Difference]: With dead ends: 11564 [2021-12-28 03:55:56,980 INFO L226 Difference]: Without dead ends: 8163 [2021-12-28 03:55:57,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:55:57,005 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1109 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:57,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 2476 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-28 03:55:57,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8163 states. [2021-12-28 03:55:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8163 to 6755. [2021-12-28 03:55:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6755 states, 5040 states have (on average 1.3178571428571428) internal successors, (6642), 5102 states have internal predecessors, (6642), 1310 states have call successors, (1310), 358 states have call predecessors, (1310), 404 states have return successors, (1485), 1334 states have call predecessors, (1485), 1309 states have call successors, (1485) [2021-12-28 03:55:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6755 states to 6755 states and 9437 transitions. [2021-12-28 03:55:57,359 INFO L78 Accepts]: Start accepts. Automaton has 6755 states and 9437 transitions. Word has length 130 [2021-12-28 03:55:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:57,361 INFO L470 AbstractCegarLoop]: Abstraction has 6755 states and 9437 transitions. [2021-12-28 03:55:57,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 03:55:57,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6755 states and 9437 transitions. [2021-12-28 03:55:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 03:55:57,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:57,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:57,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:55:57,375 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1373348168, now seen corresponding path program 1 times [2021-12-28 03:55:57,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:57,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959773067] [2021-12-28 03:55:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:57,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:55:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:55:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:55:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:55:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:55:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 03:55:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:55:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:55:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:55:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 03:55:57,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:57,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959773067] [2021-12-28 03:55:57,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959773067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:57,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:57,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:55:57,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059104440] [2021-12-28 03:55:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:57,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:55:57,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:55:57,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:55:57,650 INFO L87 Difference]: Start difference. First operand 6755 states and 9437 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 03:56:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:01,866 INFO L93 Difference]: Finished difference Result 32587 states and 48611 transitions. [2021-12-28 03:56:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:56:01,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 133 [2021-12-28 03:56:01,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:02,061 INFO L225 Difference]: With dead ends: 32587 [2021-12-28 03:56:02,061 INFO L226 Difference]: Without dead ends: 25845 [2021-12-28 03:56:02,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:56:02,094 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 2035 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 2987 mSolverCounterSat, 1168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 4155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1168 IncrementalHoareTripleChecker+Valid, 2987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:02,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 3724 Invalid, 4155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1168 Valid, 2987 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-28 03:56:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25845 states. [2021-12-28 03:56:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25845 to 12913. [2021-12-28 03:56:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12913 states, 9652 states have (on average 1.3159966846249482) internal successors, (12702), 9770 states have internal predecessors, (12702), 2494 states have call successors, (2494), 678 states have call predecessors, (2494), 766 states have return successors, (2827), 2540 states have call predecessors, (2827), 2493 states have call successors, (2827) [2021-12-28 03:56:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12913 states to 12913 states and 18023 transitions. [2021-12-28 03:56:02,955 INFO L78 Accepts]: Start accepts. Automaton has 12913 states and 18023 transitions. Word has length 133 [2021-12-28 03:56:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:02,956 INFO L470 AbstractCegarLoop]: Abstraction has 12913 states and 18023 transitions. [2021-12-28 03:56:02,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 03:56:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12913 states and 18023 transitions. [2021-12-28 03:56:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:56:02,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:02,970 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:56:02,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:56:02,970 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash 74024474, now seen corresponding path program 1 times [2021-12-28 03:56:02,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:02,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292286854] [2021-12-28 03:56:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:02,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:56:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:56:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:56:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:56:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:56:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:56:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:56:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-28 03:56:03,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:03,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292286854] [2021-12-28 03:56:03,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292286854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:56:03,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:56:03,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:56:03,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29945089] [2021-12-28 03:56:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:56:03,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:56:03,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:56:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:56:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:56:03,368 INFO L87 Difference]: Start difference. First operand 12913 states and 18023 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:56:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:05,464 INFO L93 Difference]: Finished difference Result 20477 states and 29022 transitions. [2021-12-28 03:56:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:56:05,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 130 [2021-12-28 03:56:05,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:05,472 INFO L225 Difference]: With dead ends: 20477 [2021-12-28 03:56:05,472 INFO L226 Difference]: Without dead ends: 0 [2021-12-28 03:56:05,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:56:05,525 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1256 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:05,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 2063 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 03:56:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-28 03:56:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-28 03:56:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:56:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-28 03:56:05,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2021-12-28 03:56:05,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:05,530 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 03:56:05,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:56:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-28 03:56:05,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-28 03:56:05,533 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 03:56:05,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:56:05,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.