./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--caif--caif_hsi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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--caif--caif_hsi.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 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 00:37:11,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:37:11,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:37:11,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:37:11,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:37:11,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:37:11,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:37:11,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:37:11,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:37:11,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:37:11,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:37:11,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:37:11,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:37:11,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:37:11,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:37:11,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:37:11,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:37:11,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:37:11,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:37:11,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:37:11,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:37:11,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:37:11,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:37:11,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:37:11,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:37:11,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:37:11,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:37:11,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:37:11,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:37:11,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:37:11,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:37:11,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:37:11,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:37:11,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:37:11,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:37:11,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:37:11,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:37:11,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:37:11,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:37:11,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:37:11,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:37:11,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:37:11,929 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:37:11,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:37:11,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:37:11,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:37:11,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:37:11,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:37:11,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:37:11,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:37:11,931 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:37:11,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:37:11,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:37:11,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:37:11,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:37:11,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:37:11,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:37:11,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:37:11,933 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:37:11,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:37:11,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:37:11,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:37:11,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:37:11,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:37:11,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:37:11,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:37:11,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:37:11,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:37:11,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:37:11,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:37:11,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:37:11,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:37:11,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:37:11,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-11-17 00:37:12,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:37:12,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:37:12,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:37:12,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:37:12,151 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:37:12,151 INFO L432 ainManager$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--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-17 00:37:12,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da062ec53/41fe103a9606471da0183f63b11c3d6e/FLAG9bb415192 [2021-11-17 00:37:12,756 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:37:12,757 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--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-17 00:37:12,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da062ec53/41fe103a9606471da0183f63b11c3d6e/FLAG9bb415192 [2021-11-17 00:37:13,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da062ec53/41fe103a9606471da0183f63b11c3d6e [2021-11-17 00:37:13,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:37:13,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:37:13,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:37:13,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:37:13,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:37:13,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:37:13" (1/1) ... [2021-11-17 00:37:13,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf24d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:13, skipping insertion in model container [2021-11-17 00:37:13,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:37:13" (1/1) ... [2021-11-17 00:37:13,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:37:13,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:37:13,948 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--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-17 00:37:14,527 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:37:14,553 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:37:14,670 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--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-17 00:37:14,797 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:37:14,859 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:37:14,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14 WrapperNode [2021-11-17 00:37:14,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:37:14,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:37:14,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:37:14,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:37:14,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:14,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,025 INFO L137 Inliner]: procedures = 220, calls = 1799, calls flagged for inlining = 81, calls inlined = 72, statements flattened = 3200 [2021-11-17 00:37:15,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:37:15,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:37:15,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:37:15,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:37:15,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:37:15,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:37:15,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:37:15,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:37:15,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (1/1) ... [2021-11-17 00:37:15,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:37:15,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:37:15,187 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) [2021-11-17 00:37:15,211 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 [2021-11-17 00:37:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure nla_get_u32 [2021-11-17 00:37:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_get_u32 [2021-11-17 00:37:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_xmit [2021-11-17 00:37:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_xmit [2021-11-17 00:37:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 00:37:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 00:37:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:37:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:37:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put_u32 [2021-11-17 00:37:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put_u32 [2021-11-17 00:37:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_start_tx [2021-11-17 00:37:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_start_tx [2021-11-17 00:37:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:37:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:37:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-17 00:37:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-17 00:37:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2021-11-17 00:37:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2021-11-17 00:37:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-17 00:37:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-17 00:37:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-17 00:37:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-17 00:37:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-11-17 00:37:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-11-17 00:37:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:37:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:37:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-11-17 00:37:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-11-17 00:37:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-17 00:37:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-17 00:37:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-11-17 00:37:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-11-17 00:37:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:37:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:37:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-17 00:37:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-17 00:37:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 00:37:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 00:37:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_fill_info [2021-11-17 00:37:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_fill_info [2021-11-17 00:37:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:37:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-17 00:37:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-17 00:37:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc [2021-11-17 00:37:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc [2021-11-17 00:37:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_update_aggregation_stats [2021-11-17 00:37:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_update_aggregation_stats [2021-11-17 00:37:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:37:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-17 00:37:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-17 00:37:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:37:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_frm [2021-11-17 00:37:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_frm [2021-11-17 00:37:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:37:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-17 00:37:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-17 00:37:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_dequeue [2021-11-17 00:37:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_dequeue [2021-11-17 00:37:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 00:37:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 00:37:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-17 00:37:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-17 00:37:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-17 00:37:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-17 00:37:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc_len [2021-11-17 00:37:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc_len [2021-11-17 00:37:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 00:37:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:37:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:37:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_queue_len [2021-11-17 00:37:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_queue_len [2021-11-17 00:37:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 00:37:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 00:37:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 00:37:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-11-17 00:37:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-11-17 00:37:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:37:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_21 [2021-11-17 00:37:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_21 [2021-11-17 00:37:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-17 00:37:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-17 00:37:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 00:37:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 00:37:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-17 00:37:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-17 00:37:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-17 00:37:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-17 00:37:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_get_size [2021-11-17 00:37:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_get_size [2021-11-17 00:37:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_netlink_parms [2021-11-17 00:37:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_netlink_parms [2021-11-17 00:37:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-17 00:37:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-17 00:37:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 00:37:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 00:37:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:37:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:37:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:37:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:37:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-11-17 00:37:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-11-17 00:37:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-17 00:37:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-17 00:37:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-11-17 00:37:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-11-17 00:37:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:37:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-17 00:37:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-17 00:37:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_changelink [2021-11-17 00:37:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_changelink [2021-11-17 00:37:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:37:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 00:37:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-17 00:37:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-17 00:37:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-17 00:37:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-17 00:37:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-17 00:37:15,247 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-17 00:37:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2021-11-17 00:37:15,249 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2021-11-17 00:37:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_done [2021-11-17 00:37:15,249 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_done [2021-11-17 00:37:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-17 00:37:15,250 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-17 00:37:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2021-11-17 00:37:15,251 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2021-11-17 00:37:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-17 00:37:15,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-17 00:37:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_can_send_aggregate [2021-11-17 00:37:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_can_send_aggregate [2021-11-17 00:37:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-17 00:37:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-17 00:37:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-17 00:37:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-17 00:37:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-17 00:37:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-17 00:37:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-17 00:37:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-17 00:37:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-17 00:37:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-17 00:37:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-17 00:37:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-17 00:37:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_newlink [2021-11-17 00:37:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_newlink [2021-11-17 00:37:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-17 00:37:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-17 00:37:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:37:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-17 00:37:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-17 00:37:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2021-11-17 00:37:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2021-11-17 00:37:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-17 00:37:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-17 00:37:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_abort_tx [2021-11-17 00:37:15,258 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_abort_tx [2021-11-17 00:37:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-17 00:37:15,258 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-17 00:37:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:37:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:37:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-17 00:37:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-17 00:37:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-17 00:37:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-17 00:37:15,788 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:37:15,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:37:16,148 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:37:19,105 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:37:19,119 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:37:19,120 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-17 00:37:19,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:37:19 BoogieIcfgContainer [2021-11-17 00:37:19,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:37:19,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:37:19,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:37:19,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:37:19,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:37:13" (1/3) ... [2021-11-17 00:37:19,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:37:19, skipping insertion in model container [2021-11-17 00:37:19,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:37:14" (2/3) ... [2021-11-17 00:37:19,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:37:19, skipping insertion in model container [2021-11-17 00:37:19,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:37:19" (3/3) ... [2021-11-17 00:37:19,128 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-17 00:37:19,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:37:19,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:37:19,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:37:19,166 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 [2021-11-17 00:37:19,166 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:37:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 1077 states, 748 states have (on average 1.3302139037433156) internal successors, (995), 767 states have internal predecessors, (995), 255 states have call successors, (255), 73 states have call predecessors, (255), 72 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2021-11-17 00:37:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-17 00:37:19,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:19,198 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:19,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:19,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:19,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1207697296, now seen corresponding path program 1 times [2021-11-17 00:37:19,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:19,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188072358] [2021-11-17 00:37:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:19,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:37:19,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:19,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188072358] [2021-11-17 00:37:19,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188072358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:19,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:19,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:37:19,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621927695] [2021-11-17 00:37:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:19,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:37:19,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:19,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:37:19,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:37:19,653 INFO L87 Difference]: Start difference. First operand has 1077 states, 748 states have (on average 1.3302139037433156) internal successors, (995), 767 states have internal predecessors, (995), 255 states have call successors, (255), 73 states have call predecessors, (255), 72 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:37:21,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:25,505 INFO L93 Difference]: Finished difference Result 3524 states and 5199 transitions. [2021-11-17 00:37:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:37:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-11-17 00:37:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:25,540 INFO L225 Difference]: With dead ends: 3524 [2021-11-17 00:37:25,541 INFO L226 Difference]: Without dead ends: 2417 [2021-11-17 00:37:25,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:37:25,556 INFO L933 BasicCegarLoop]: 1809 mSDtfsCounter, 2049 mSDsluCounter, 5392 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 738 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 7201 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:25,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2243 Valid, 7201 Invalid, 2563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [738 Valid, 1824 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-17 00:37:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-11-17 00:37:25,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2213. [2021-11-17 00:37:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1544 states have (on average 1.3180051813471503) internal successors, (2035), 1577 states have internal predecessors, (2035), 518 states have call successors, (518), 141 states have call predecessors, (518), 150 states have return successors, (587), 523 states have call predecessors, (587), 517 states have call successors, (587) [2021-11-17 00:37:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3140 transitions. [2021-11-17 00:37:25,728 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3140 transitions. Word has length 39 [2021-11-17 00:37:25,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:25,729 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 3140 transitions. [2021-11-17 00:37:25,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:37:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3140 transitions. [2021-11-17 00:37:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-17 00:37:25,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:25,747 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:25,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:37:25,747 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1372830722, now seen corresponding path program 1 times [2021-11-17 00:37:25,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:25,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154123530] [2021-11-17 00:37:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:25,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:37:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:37:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:37:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:37:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:37:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-17 00:37:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-17 00:37:26,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:26,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154123530] [2021-11-17 00:37:26,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154123530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:26,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:26,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-17 00:37:26,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388713486] [2021-11-17 00:37:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:26,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-17 00:37:26,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-17 00:37:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:37:26,288 INFO L87 Difference]: Start difference. First operand 2213 states and 3140 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 00:37:28,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:31,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:35,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:35,098 INFO L93 Difference]: Finished difference Result 4792 states and 7048 transitions. [2021-11-17 00:37:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-17 00:37:35,099 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2021-11-17 00:37:35,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:35,114 INFO L225 Difference]: With dead ends: 4792 [2021-11-17 00:37:35,114 INFO L226 Difference]: Without dead ends: 2589 [2021-11-17 00:37:35,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-11-17 00:37:35,127 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 486 mSDsluCounter, 10188 mSDsCounter, 0 mSdLazyCounter, 3829 mSolverCounterSat, 339 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 11687 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 3829 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:35,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 11687 Invalid, 4169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 3829 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-17 00:37:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-11-17 00:37:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2241. [2021-11-17 00:37:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 1566 states have (on average 1.3148148148148149) internal successors, (2059), 1600 states have internal predecessors, (2059), 518 states have call successors, (518), 141 states have call predecessors, (518), 156 states have return successors, (612), 528 states have call predecessors, (612), 517 states have call successors, (612) [2021-11-17 00:37:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 3189 transitions. [2021-11-17 00:37:35,210 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 3189 transitions. Word has length 126 [2021-11-17 00:37:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:35,210 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 3189 transitions. [2021-11-17 00:37:35,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 00:37:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 3189 transitions. [2021-11-17 00:37:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-17 00:37:35,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:35,220 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:35,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:37:35,220 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1815783323, now seen corresponding path program 1 times [2021-11-17 00:37:35,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:35,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012835271] [2021-11-17 00:37:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:35,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:37:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:37:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:37:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:37:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:37:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:37:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:37:35,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:35,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012835271] [2021-11-17 00:37:35,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012835271] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:37:35,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087118469] [2021-11-17 00:37:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:35,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:37:35,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:37:35,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:37:35,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:37:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:36,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:37:36,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:37:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 00:37:36,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:37:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:37:36,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087118469] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:37:36,649 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:37:36,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2021-11-17 00:37:36,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933081366] [2021-11-17 00:37:36,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:37:36,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:37:36,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:36,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:37:36,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:37:36,652 INFO L87 Difference]: Start difference. First operand 2241 states and 3189 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-17 00:37:38,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:42,159 INFO L93 Difference]: Finished difference Result 4892 states and 7224 transitions. [2021-11-17 00:37:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:37:42,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 130 [2021-11-17 00:37:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:42,177 INFO L225 Difference]: With dead ends: 4892 [2021-11-17 00:37:42,178 INFO L226 Difference]: Without dead ends: 2661 [2021-11-17 00:37:42,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:37:42,193 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 514 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 368 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:42,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 3910 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1553 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-17 00:37:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2021-11-17 00:37:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2313. [2021-11-17 00:37:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1630 states have (on average 1.3061349693251534) internal successors, (2129), 1657 states have internal predecessors, (2129), 526 states have call successors, (526), 141 states have call predecessors, (526), 156 states have return successors, (639), 543 states have call predecessors, (639), 525 states have call successors, (639) [2021-11-17 00:37:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3294 transitions. [2021-11-17 00:37:42,302 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3294 transitions. Word has length 130 [2021-11-17 00:37:42,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:42,303 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3294 transitions. [2021-11-17 00:37:42,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-17 00:37:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3294 transitions. [2021-11-17 00:37:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-17 00:37:42,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:42,327 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:42,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 00:37:42,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:37:42,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash -917363115, now seen corresponding path program 1 times [2021-11-17 00:37:42,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:42,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419476235] [2021-11-17 00:37:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:42,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:37:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:37:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:37:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:37:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:37:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-17 00:37:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:37:42,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:42,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419476235] [2021-11-17 00:37:42,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419476235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:42,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:42,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:37:42,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829089833] [2021-11-17 00:37:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:42,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:37:42,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:37:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:37:42,825 INFO L87 Difference]: Start difference. First operand 2313 states and 3294 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:37:44,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:46,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:50,199 INFO L93 Difference]: Finished difference Result 4962 states and 7246 transitions. [2021-11-17 00:37:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:37:50,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2021-11-17 00:37:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:50,215 INFO L225 Difference]: With dead ends: 4962 [2021-11-17 00:37:50,215 INFO L226 Difference]: Without dead ends: 2659 [2021-11-17 00:37:50,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:37:50,224 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 744 mSDsluCounter, 5141 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 616 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 6666 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:50,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 6666 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 2202 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-17 00:37:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-11-17 00:37:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2321. [2021-11-17 00:37:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 1636 states have (on average 1.3050122249388754) internal successors, (2135), 1663 states have internal predecessors, (2135), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (646), 545 states have call predecessors, (646), 525 states have call successors, (646) [2021-11-17 00:37:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3307 transitions. [2021-11-17 00:37:50,302 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3307 transitions. Word has length 133 [2021-11-17 00:37:50,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:50,303 INFO L470 AbstractCegarLoop]: Abstraction has 2321 states and 3307 transitions. [2021-11-17 00:37:50,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:37:50,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3307 transitions. [2021-11-17 00:37:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-17 00:37:50,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:50,312 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:50,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 00:37:50,312 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:50,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1662680216, now seen corresponding path program 1 times [2021-11-17 00:37:50,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:50,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49857159] [2021-11-17 00:37:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:50,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:37:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:37:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:37:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:37:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:37:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-17 00:37:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:37:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-17 00:37:50,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:50,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49857159] [2021-11-17 00:37:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49857159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:50,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:50,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:37:50,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683657346] [2021-11-17 00:37:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:50,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:37:50,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:37:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:37:50,560 INFO L87 Difference]: Start difference. First operand 2321 states and 3307 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:37:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:53,961 INFO L93 Difference]: Finished difference Result 4962 states and 7240 transitions. [2021-11-17 00:37:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:37:53,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 141 [2021-11-17 00:37:53,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:53,976 INFO L225 Difference]: With dead ends: 4962 [2021-11-17 00:37:53,976 INFO L226 Difference]: Without dead ends: 2651 [2021-11-17 00:37:53,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:37:53,985 INFO L933 BasicCegarLoop]: 1500 mSDtfsCounter, 736 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:53,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 4010 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-17 00:37:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-11-17 00:37:54,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2323. [2021-11-17 00:37:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1638 states have (on average 1.3046398046398047) internal successors, (2137), 1665 states have internal predecessors, (2137), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (646), 545 states have call predecessors, (646), 525 states have call successors, (646) [2021-11-17 00:37:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3309 transitions. [2021-11-17 00:37:54,091 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3309 transitions. Word has length 141 [2021-11-17 00:37:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:54,093 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 3309 transitions. [2021-11-17 00:37:54,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:37:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3309 transitions. [2021-11-17 00:37:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-17 00:37:54,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:54,099 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:54,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 00:37:54,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1313911595, now seen corresponding path program 1 times [2021-11-17 00:37:54,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:54,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486149104] [2021-11-17 00:37:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:54,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:37:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:37:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:37:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:37:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:37:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:37:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 00:37:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-17 00:37:54,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:54,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486149104] [2021-11-17 00:37:54,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486149104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:37:54,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129982513] [2021-11-17 00:37:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:54,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:37:54,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:37:54,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:37:54,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 00:37:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:54,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:37:54,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:37:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-17 00:37:54,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:37:54,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129982513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:54,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:37:54,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-17 00:37:54,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504569779] [2021-11-17 00:37:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:54,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:37:54,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:37:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:37:54,995 INFO L87 Difference]: Start difference. First operand 2323 states and 3309 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 00:37:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:55,068 INFO L93 Difference]: Finished difference Result 4686 states and 6733 transitions. [2021-11-17 00:37:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:37:55,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 144 [2021-11-17 00:37:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:55,079 INFO L225 Difference]: With dead ends: 4686 [2021-11-17 00:37:55,079 INFO L226 Difference]: Without dead ends: 2373 [2021-11-17 00:37:55,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:37:55,087 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 13 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:55,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2995 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:37:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2021-11-17 00:37:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2325. [2021-11-17 00:37:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1640 states have (on average 1.3042682926829268) internal successors, (2139), 1667 states have internal predecessors, (2139), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (646), 545 states have call predecessors, (646), 525 states have call successors, (646) [2021-11-17 00:37:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3311 transitions. [2021-11-17 00:37:55,177 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3311 transitions. Word has length 144 [2021-11-17 00:37:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:55,177 INFO L470 AbstractCegarLoop]: Abstraction has 2325 states and 3311 transitions. [2021-11-17 00:37:55,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 00:37:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3311 transitions. [2021-11-17 00:37:55,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-17 00:37:55,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:55,185 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:55,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-17 00:37:55,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-17 00:37:55,397 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1432107075, now seen corresponding path program 1 times [2021-11-17 00:37:55,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:55,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421692621] [2021-11-17 00:37:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:55,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:37:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:37:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:37:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:37:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:37:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:37:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:37:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:37:55,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:55,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421692621] [2021-11-17 00:37:55,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421692621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:55,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:55,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:37:55,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63219925] [2021-11-17 00:37:55,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:55,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:37:55,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:37:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:37:55,653 INFO L87 Difference]: Start difference. First operand 2325 states and 3311 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-17 00:37:56,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:59,398 INFO L93 Difference]: Finished difference Result 5004 states and 7316 transitions. [2021-11-17 00:37:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:37:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 147 [2021-11-17 00:37:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:59,412 INFO L225 Difference]: With dead ends: 5004 [2021-11-17 00:37:59,412 INFO L226 Difference]: Without dead ends: 2689 [2021-11-17 00:37:59,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:37:59,423 INFO L933 BasicCegarLoop]: 1474 mSDtfsCounter, 1146 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 1016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1016 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:59,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 3374 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1016 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-17 00:37:59,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-11-17 00:37:59,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2337. [2021-11-17 00:37:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 1650 states have (on average 1.304848484848485) internal successors, (2153), 1677 states have internal predecessors, (2153), 528 states have call successors, (528), 141 states have call predecessors, (528), 158 states have return successors, (650), 547 states have call predecessors, (650), 527 states have call successors, (650) [2021-11-17 00:37:59,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3331 transitions. [2021-11-17 00:37:59,500 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3331 transitions. Word has length 147 [2021-11-17 00:37:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:59,500 INFO L470 AbstractCegarLoop]: Abstraction has 2337 states and 3331 transitions. [2021-11-17 00:37:59,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-17 00:37:59,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3331 transitions. [2021-11-17 00:37:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-17 00:37:59,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:59,507 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:59,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 00:37:59,508 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:59,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1266616076, now seen corresponding path program 1 times [2021-11-17 00:37:59,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:59,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903037682] [2021-11-17 00:37:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:59,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:37:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:37:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:37:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:37:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:37:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:37:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:37:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:37:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 00:37:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:37:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:37:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:37:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-17 00:37:59,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:59,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903037682] [2021-11-17 00:37:59,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903037682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:59,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:59,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:37:59,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507548569] [2021-11-17 00:37:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:59,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:37:59,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:37:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:37:59,703 INFO L87 Difference]: Start difference. First operand 2337 states and 3331 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 00:38:02,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:05,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:38:05,831 INFO L93 Difference]: Finished difference Result 6721 states and 9680 transitions. [2021-11-17 00:38:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:38:05,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2021-11-17 00:38:05,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:38:05,854 INFO L225 Difference]: With dead ends: 6721 [2021-11-17 00:38:05,855 INFO L226 Difference]: Without dead ends: 4394 [2021-11-17 00:38:05,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:38:05,864 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 2223 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 1125 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1125 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:38:05,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 4125 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1125 Valid, 1732 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-17 00:38:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2021-11-17 00:38:05,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3830. [2021-11-17 00:38:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3830 states, 2764 states have (on average 1.3140376266280753) internal successors, (3632), 2801 states have internal predecessors, (3632), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (994), 836 states have call predecessors, (994), 798 states have call successors, (994) [2021-11-17 00:38:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 5425 transitions. [2021-11-17 00:38:06,011 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 5425 transitions. Word has length 162 [2021-11-17 00:38:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:38:06,012 INFO L470 AbstractCegarLoop]: Abstraction has 3830 states and 5425 transitions. [2021-11-17 00:38:06,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 00:38:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 5425 transitions. [2021-11-17 00:38:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-17 00:38:06,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:38:06,024 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:38:06,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 00:38:06,024 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:38:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:38:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash -300217313, now seen corresponding path program 1 times [2021-11-17 00:38:06,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:38:06,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508635025] [2021-11-17 00:38:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:06,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:38:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:38:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:38:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:38:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:38:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-17 00:38:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:38:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:38:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:38:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-17 00:38:06,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:38:06,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508635025] [2021-11-17 00:38:06,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508635025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:38:06,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:38:06,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:38:06,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984105026] [2021-11-17 00:38:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:38:06,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:38:06,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:38:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:38:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:38:06,262 INFO L87 Difference]: Start difference. First operand 3830 states and 5425 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:38:08,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:10,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:38:13,134 INFO L93 Difference]: Finished difference Result 8092 states and 11694 transitions. [2021-11-17 00:38:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:38:13,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2021-11-17 00:38:13,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:38:13,149 INFO L225 Difference]: With dead ends: 8092 [2021-11-17 00:38:13,149 INFO L226 Difference]: Without dead ends: 4272 [2021-11-17 00:38:13,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:38:13,158 INFO L933 BasicCegarLoop]: 1492 mSDtfsCounter, 757 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 626 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 3959 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:38:13,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 3959 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1447 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-17 00:38:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2021-11-17 00:38:13,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3846. [2021-11-17 00:38:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 2780 states have (on average 1.3122302158273382) internal successors, (3648), 2817 states have internal predecessors, (3648), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (994), 836 states have call predecessors, (994), 798 states have call successors, (994) [2021-11-17 00:38:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 5441 transitions. [2021-11-17 00:38:13,277 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 5441 transitions. Word has length 151 [2021-11-17 00:38:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:38:13,278 INFO L470 AbstractCegarLoop]: Abstraction has 3846 states and 5441 transitions. [2021-11-17 00:38:13,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:38:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 5441 transitions. [2021-11-17 00:38:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-17 00:38:13,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:38:13,286 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:38:13,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 00:38:13,286 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:38:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:38:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2094671628, now seen corresponding path program 1 times [2021-11-17 00:38:13,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:38:13,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103382275] [2021-11-17 00:38:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:13,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:38:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:38:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:38:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:38:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:38:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:38:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:38:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:38:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 00:38:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:38:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:38:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-17 00:38:13,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:38:13,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103382275] [2021-11-17 00:38:13,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103382275] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:38:13,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894835814] [2021-11-17 00:38:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:13,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:38:13,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:38:13,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:38:13,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 00:38:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:14,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:38:14,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:38:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-17 00:38:14,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:38:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-17 00:38:14,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894835814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:38:14,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:38:14,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-11-17 00:38:14,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599411273] [2021-11-17 00:38:14,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:38:14,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:38:14,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:38:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:38:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:38:14,540 INFO L87 Difference]: Start difference. First operand 3846 states and 5441 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 00:38:18,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:38:18,444 INFO L93 Difference]: Finished difference Result 8264 states and 11914 transitions. [2021-11-17 00:38:18,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:38:18,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2021-11-17 00:38:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:38:18,464 INFO L225 Difference]: With dead ends: 8264 [2021-11-17 00:38:18,465 INFO L226 Difference]: Without dead ends: 4428 [2021-11-17 00:38:18,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:38:18,476 INFO L933 BasicCegarLoop]: 1477 mSDtfsCounter, 1521 mSDsluCounter, 4868 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 1355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 6345 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1355 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:38:18,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 6345 Invalid, 3816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1355 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-17 00:38:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-11-17 00:38:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 3882. [2021-11-17 00:38:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2816 states have (on average 1.3082386363636365) internal successors, (3684), 2853 states have internal predecessors, (3684), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (994), 836 states have call predecessors, (994), 798 states have call successors, (994) [2021-11-17 00:38:18,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5477 transitions. [2021-11-17 00:38:18,649 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5477 transitions. Word has length 153 [2021-11-17 00:38:18,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:38:18,650 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5477 transitions. [2021-11-17 00:38:18,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 00:38:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5477 transitions. [2021-11-17 00:38:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-17 00:38:18,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:38:18,658 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:38:18,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 00:38:18,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:38:18,868 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:38:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:38:18,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1252937998, now seen corresponding path program 1 times [2021-11-17 00:38:18,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:38:18,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139578986] [2021-11-17 00:38:18,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:18,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:38:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:38:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:38:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:38:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:38:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:38:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:38:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:38:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:38:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:38:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:38:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:38:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-17 00:38:19,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:38:19,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139578986] [2021-11-17 00:38:19,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139578986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:38:19,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:38:19,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:38:19,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123779535] [2021-11-17 00:38:19,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:38:19,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:38:19,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:38:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:38:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:38:19,151 INFO L87 Difference]: Start difference. First operand 3882 states and 5477 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-17 00:38:21,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:23,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:24,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:38:31,927 INFO L93 Difference]: Finished difference Result 13272 states and 19349 transitions. [2021-11-17 00:38:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:38:31,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 152 [2021-11-17 00:38:31,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:38:31,960 INFO L225 Difference]: With dead ends: 13272 [2021-11-17 00:38:31,960 INFO L226 Difference]: Without dead ends: 9400 [2021-11-17 00:38:31,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:38:31,971 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 2247 mSDsluCounter, 5092 mSDsCounter, 0 mSdLazyCounter, 4933 mSolverCounterSat, 943 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 7203 SdHoareTripleChecker+Invalid, 5878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 4933 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:38:31,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 7203 Invalid, 5878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 4933 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-11-17 00:38:31,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2021-11-17 00:38:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 7988. [2021-11-17 00:38:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7988 states, 5793 states have (on average 1.3077852580700846) internal successors, (7576), 5889 states have internal predecessors, (7576), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2258), 1733 states have call predecessors, (2258), 1645 states have call successors, (2258) [2021-11-17 00:38:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 11480 transitions. [2021-11-17 00:38:32,253 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 11480 transitions. Word has length 152 [2021-11-17 00:38:32,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:38:32,254 INFO L470 AbstractCegarLoop]: Abstraction has 7988 states and 11480 transitions. [2021-11-17 00:38:32,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-17 00:38:32,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 11480 transitions. [2021-11-17 00:38:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-17 00:38:32,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:38:32,271 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:38:32,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 00:38:32,271 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:38:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:38:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1906182502, now seen corresponding path program 1 times [2021-11-17 00:38:32,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:38:32,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044672566] [2021-11-17 00:38:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:32,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:38:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:38:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:38:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:38:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:38:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:38:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:38:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:38:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:38:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:38:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:38:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:38:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:38:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:38:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 00:38:32,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:38:32,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044672566] [2021-11-17 00:38:32,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044672566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:38:32,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173536308] [2021-11-17 00:38:32,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:32,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:38:32,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:38:32,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:38:32,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 00:38:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:33,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:38:33,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:38:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-17 00:38:33,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:38:33,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173536308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:38:33,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:38:33,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-11-17 00:38:33,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360503423] [2021-11-17 00:38:33,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:38:33,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:38:33,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:38:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:38:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:38:33,367 INFO L87 Difference]: Start difference. First operand 7988 states and 11480 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:38:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:38:33,599 INFO L93 Difference]: Finished difference Result 15974 states and 23064 transitions. [2021-11-17 00:38:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:38:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 178 [2021-11-17 00:38:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:38:33,634 INFO L225 Difference]: With dead ends: 15974 [2021-11-17 00:38:33,634 INFO L226 Difference]: Without dead ends: 7996 [2021-11-17 00:38:33,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:38:33,656 INFO L933 BasicCegarLoop]: 1477 mSDtfsCounter, 0 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:38:33,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2950 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:38:33,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2021-11-17 00:38:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 7996. [2021-11-17 00:38:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7996 states, 5801 states have (on average 1.3073607998620926) internal successors, (7584), 5897 states have internal predecessors, (7584), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2258), 1733 states have call predecessors, (2258), 1645 states have call successors, (2258) [2021-11-17 00:38:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 11488 transitions. [2021-11-17 00:38:33,973 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 11488 transitions. Word has length 178 [2021-11-17 00:38:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:38:33,973 INFO L470 AbstractCegarLoop]: Abstraction has 7996 states and 11488 transitions. [2021-11-17 00:38:33,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:38:33,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 11488 transitions. [2021-11-17 00:38:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-17 00:38:33,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:38:33,986 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:38:34,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 00:38:34,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:38:34,207 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:38:34,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:38:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash -220906961, now seen corresponding path program 1 times [2021-11-17 00:38:34,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:38:34,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784543560] [2021-11-17 00:38:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:34,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:38:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:38:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:38:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:38:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:38:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:38:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:38:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:38:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:38:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:38:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:38:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:38:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-17 00:38:34,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:38:34,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784543560] [2021-11-17 00:38:34,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784543560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:38:34,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:38:34,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:38:34,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210181264] [2021-11-17 00:38:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:38:34,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:38:34,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:38:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:38:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:38:34,532 INFO L87 Difference]: Start difference. First operand 7996 states and 11488 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 6 states have internal predecessors, (108), 4 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-17 00:38:35,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:37,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:40,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:38:50,303 INFO L93 Difference]: Finished difference Result 17082 states and 24858 transitions. [2021-11-17 00:38:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 00:38:50,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 6 states have internal predecessors, (108), 4 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 159 [2021-11-17 00:38:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:38:50,342 INFO L225 Difference]: With dead ends: 17082 [2021-11-17 00:38:50,343 INFO L226 Difference]: Without dead ends: 9096 [2021-11-17 00:38:50,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:38:50,364 INFO L933 BasicCegarLoop]: 2024 mSDtfsCounter, 2663 mSDsluCounter, 7661 mSDsCounter, 0 mSdLazyCounter, 7415 mSolverCounterSat, 1430 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2884 SdHoareTripleChecker+Valid, 9685 SdHoareTripleChecker+Invalid, 8847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 7415 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:38:50,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2884 Valid, 9685 Invalid, 8847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 7415 Invalid, 2 Unknown, 0 Unchecked, 15.2s Time] [2021-11-17 00:38:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9096 states. [2021-11-17 00:38:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9096 to 8100. [2021-11-17 00:38:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8100 states, 5889 states have (on average 1.3082017320427917) internal successors, (7704), 5977 states have internal predecessors, (7704), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 556 states have return successors, (2298), 1757 states have call predecessors, (2298), 1653 states have call successors, (2298) [2021-11-17 00:38:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8100 states to 8100 states and 11656 transitions. [2021-11-17 00:38:50,711 INFO L78 Accepts]: Start accepts. Automaton has 8100 states and 11656 transitions. Word has length 159 [2021-11-17 00:38:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:38:50,712 INFO L470 AbstractCegarLoop]: Abstraction has 8100 states and 11656 transitions. [2021-11-17 00:38:50,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 6 states have internal predecessors, (108), 4 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-17 00:38:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 8100 states and 11656 transitions. [2021-11-17 00:38:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-17 00:38:50,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:38:50,728 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:38:50,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 00:38:50,728 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:38:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:38:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1945474842, now seen corresponding path program 1 times [2021-11-17 00:38:50,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:38:50,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371993132] [2021-11-17 00:38:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:50,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:38:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:38:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:38:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:38:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:38:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:38:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:38:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:38:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:38:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:38:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:38:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:38:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:38:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:38:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-17 00:38:51,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:38:51,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371993132] [2021-11-17 00:38:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371993132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:38:51,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:38:51,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-17 00:38:51,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437987461] [2021-11-17 00:38:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:38:51,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-17 00:38:51,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:38:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-17 00:38:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:38:51,092 INFO L87 Difference]: Start difference. First operand 8100 states and 11656 transitions. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 9 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 00:39:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:39:03,241 INFO L93 Difference]: Finished difference Result 16886 states and 24956 transitions. [2021-11-17 00:39:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-17 00:39:03,242 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 9 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) Word has length 176 [2021-11-17 00:39:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:39:03,282 INFO L225 Difference]: With dead ends: 16886 [2021-11-17 00:39:03,282 INFO L226 Difference]: Without dead ends: 8796 [2021-11-17 00:39:03,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2021-11-17 00:39:03,313 INFO L933 BasicCegarLoop]: 2055 mSDtfsCounter, 2585 mSDsluCounter, 17022 mSDsCounter, 0 mSdLazyCounter, 10734 mSolverCounterSat, 1377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 19077 SdHoareTripleChecker+Invalid, 12111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1377 IncrementalHoareTripleChecker+Valid, 10734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:39:03,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2806 Valid, 19077 Invalid, 12111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1377 Valid, 10734 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2021-11-17 00:39:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2021-11-17 00:39:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 8106. [2021-11-17 00:39:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8106 states, 5897 states have (on average 1.3064269967780227) internal successors, (7704), 5977 states have internal predecessors, (7704), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 554 states have return successors, (2282), 1763 states have call predecessors, (2282), 1653 states have call successors, (2282) [2021-11-17 00:39:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 11640 transitions. [2021-11-17 00:39:03,600 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 11640 transitions. Word has length 176 [2021-11-17 00:39:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:39:03,600 INFO L470 AbstractCegarLoop]: Abstraction has 8106 states and 11640 transitions. [2021-11-17 00:39:03,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 9 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 00:39:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 11640 transitions. [2021-11-17 00:39:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-17 00:39:03,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:39:03,634 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:39:03,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 00:39:03,635 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:39:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:39:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1142787201, now seen corresponding path program 1 times [2021-11-17 00:39:03,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:39:03,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664673094] [2021-11-17 00:39:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:03,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:39:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:39:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:39:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:39:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:39:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:39:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:39:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:39:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:39:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:39:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:39:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:39:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:39:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-17 00:39:04,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:39:04,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664673094] [2021-11-17 00:39:04,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664673094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:39:04,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:39:04,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-17 00:39:04,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350694090] [2021-11-17 00:39:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:39:04,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-17 00:39:04,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:39:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-17 00:39:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:39:04,068 INFO L87 Difference]: Start difference. First operand 8106 states and 11640 transitions. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 8 states have internal predecessors, (115), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:39:06,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:08,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:39:18,873 INFO L93 Difference]: Finished difference Result 16892 states and 24574 transitions. [2021-11-17 00:39:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-17 00:39:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 8 states have internal predecessors, (115), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2021-11-17 00:39:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:39:18,904 INFO L225 Difference]: With dead ends: 16892 [2021-11-17 00:39:18,905 INFO L226 Difference]: Without dead ends: 8796 [2021-11-17 00:39:18,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=1351, Unknown=0, NotChecked=0, Total=1640 [2021-11-17 00:39:18,927 INFO L933 BasicCegarLoop]: 2034 mSDtfsCounter, 2083 mSDsluCounter, 15065 mSDsCounter, 0 mSdLazyCounter, 9963 mSolverCounterSat, 839 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 17099 SdHoareTripleChecker+Invalid, 10804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 839 IncrementalHoareTripleChecker+Valid, 9963 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:39:18,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2299 Valid, 17099 Invalid, 10804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [839 Valid, 9963 Invalid, 2 Unknown, 0 Unchecked, 13.8s Time] [2021-11-17 00:39:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2021-11-17 00:39:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 8114. [2021-11-17 00:39:19,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8114 states, 5897 states have (on average 1.3057486857724268) internal successors, (7700), 5989 states have internal predecessors, (7700), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 562 states have return successors, (2340), 1759 states have call predecessors, (2340), 1653 states have call successors, (2340) [2021-11-17 00:39:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8114 states to 8114 states and 11694 transitions. [2021-11-17 00:39:19,211 INFO L78 Accepts]: Start accepts. Automaton has 8114 states and 11694 transitions. Word has length 169 [2021-11-17 00:39:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:39:19,211 INFO L470 AbstractCegarLoop]: Abstraction has 8114 states and 11694 transitions. [2021-11-17 00:39:19,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 8 states have internal predecessors, (115), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:39:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8114 states and 11694 transitions. [2021-11-17 00:39:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-17 00:39:19,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:39:19,224 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:39:19,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 00:39:19,225 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:39:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:39:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1751678617, now seen corresponding path program 2 times [2021-11-17 00:39:19,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:39:19,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69222648] [2021-11-17 00:39:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:19,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:39:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:39:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:39:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:39:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:39:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:39:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:39:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:39:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 00:39:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:39:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 00:39:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-17 00:39:19,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:39:19,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69222648] [2021-11-17 00:39:19,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69222648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:39:19,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:39:19,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-17 00:39:19,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364701439] [2021-11-17 00:39:19,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:39:19,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-17 00:39:19,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:39:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-17 00:39:19,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:39:19,902 INFO L87 Difference]: Start difference. First operand 8114 states and 11694 transitions. Second operand has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 12 states have internal predecessors, (103), 3 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 00:39:21,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:23,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:25,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:32,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:39:32,817 INFO L93 Difference]: Finished difference Result 17228 states and 25342 transitions. [2021-11-17 00:39:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-17 00:39:32,818 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 12 states have internal predecessors, (103), 3 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) Word has length 162 [2021-11-17 00:39:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:39:32,856 INFO L225 Difference]: With dead ends: 17228 [2021-11-17 00:39:32,857 INFO L226 Difference]: Without dead ends: 9124 [2021-11-17 00:39:32,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2021-11-17 00:39:32,884 INFO L933 BasicCegarLoop]: 1471 mSDtfsCounter, 1191 mSDsluCounter, 16659 mSDsCounter, 0 mSdLazyCounter, 7131 mSolverCounterSat, 1007 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 18130 SdHoareTripleChecker+Invalid, 8140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1007 IncrementalHoareTripleChecker+Valid, 7131 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:39:32,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1271 Valid, 18130 Invalid, 8140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1007 Valid, 7131 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2021-11-17 00:39:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2021-11-17 00:39:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 8154. [2021-11-17 00:39:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8154 states, 5929 states have (on average 1.3040984989036937) internal successors, (7732), 6021 states have internal predecessors, (7732), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 570 states have return successors, (2382), 1767 states have call predecessors, (2382), 1653 states have call successors, (2382) [2021-11-17 00:39:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8154 states to 8154 states and 11768 transitions. [2021-11-17 00:39:33,203 INFO L78 Accepts]: Start accepts. Automaton has 8154 states and 11768 transitions. Word has length 162 [2021-11-17 00:39:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:39:33,204 INFO L470 AbstractCegarLoop]: Abstraction has 8154 states and 11768 transitions. [2021-11-17 00:39:33,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 12 states have internal predecessors, (103), 3 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 00:39:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8154 states and 11768 transitions. [2021-11-17 00:39:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-17 00:39:33,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:39:33,216 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:39:33,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 00:39:33,216 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:39:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:39:33,216 INFO L85 PathProgramCache]: Analyzing trace with hash 503568546, now seen corresponding path program 1 times [2021-11-17 00:39:33,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:39:33,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050973106] [2021-11-17 00:39:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:33,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:39:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:39:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:39:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:39:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:39:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:39:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:39:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:39:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:39:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:39:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:39:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:39:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:39:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:39:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:39:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:39:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-17 00:39:33,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:39:33,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050973106] [2021-11-17 00:39:33,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050973106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:39:33,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755402] [2021-11-17 00:39:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:33,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:39:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:39:33,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:39:33,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 00:39:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:33,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:39:33,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:39:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-17 00:39:34,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:39:34,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:39:34,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:39:34,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-11-17 00:39:34,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168238299] [2021-11-17 00:39:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:39:34,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:39:34,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:39:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:39:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:39:34,232 INFO L87 Difference]: Start difference. First operand 8154 states and 11768 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-17 00:39:34,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:39:34,543 INFO L93 Difference]: Finished difference Result 16402 states and 23738 transitions. [2021-11-17 00:39:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:39:34,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 205 [2021-11-17 00:39:34,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:39:34,580 INFO L225 Difference]: With dead ends: 16402 [2021-11-17 00:39:34,580 INFO L226 Difference]: Without dead ends: 8258 [2021-11-17 00:39:34,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:39:34,604 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 21 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4442 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:39:34,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 4442 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:39:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8258 states. [2021-11-17 00:39:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8258 to 8170. [2021-11-17 00:39:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8170 states, 5945 states have (on average 1.3032800672834315) internal successors, (7748), 6037 states have internal predecessors, (7748), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 570 states have return successors, (2382), 1767 states have call predecessors, (2382), 1653 states have call successors, (2382) [2021-11-17 00:39:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8170 states to 8170 states and 11784 transitions. [2021-11-17 00:39:34,952 INFO L78 Accepts]: Start accepts. Automaton has 8170 states and 11784 transitions. Word has length 205 [2021-11-17 00:39:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:39:34,953 INFO L470 AbstractCegarLoop]: Abstraction has 8170 states and 11784 transitions. [2021-11-17 00:39:34,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-17 00:39:34,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8170 states and 11784 transitions. [2021-11-17 00:39:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-17 00:39:34,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:39:34,965 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:39:34,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 00:39:35,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-17 00:39:35,180 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:39:35,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:39:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1826331525, now seen corresponding path program 1 times [2021-11-17 00:39:35,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:39:35,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154960070] [2021-11-17 00:39:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:35,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:39:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:39:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:39:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:39:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:39:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:39:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:39:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:39:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:39:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:39:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:39:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:39:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:39:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:39:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:39:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:39:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-17 00:39:35,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:39:35,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154960070] [2021-11-17 00:39:35,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154960070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:39:35,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:39:35,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:39:35,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285876495] [2021-11-17 00:39:35,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:39:35,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:39:35,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:39:35,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:39:35,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:39:35,461 INFO L87 Difference]: Start difference. First operand 8170 states and 11784 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 00:39:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:39:41,070 INFO L93 Difference]: Finished difference Result 18936 states and 28202 transitions. [2021-11-17 00:39:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:39:41,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 196 [2021-11-17 00:39:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:39:41,117 INFO L225 Difference]: With dead ends: 18936 [2021-11-17 00:39:41,117 INFO L226 Difference]: Without dead ends: 10776 [2021-11-17 00:39:41,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:39:41,143 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1411 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 6413 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:39:41,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 6413 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 3196 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-17 00:39:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10776 states. [2021-11-17 00:39:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10776 to 8266. [2021-11-17 00:39:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 6025 states have (on average 1.3019087136929461) internal successors, (7844), 6101 states have internal predecessors, (7844), 1670 states have call successors, (1670), 461 states have call predecessors, (1670), 570 states have return successors, (2414), 1799 states have call predecessors, (2414), 1669 states have call successors, (2414) [2021-11-17 00:39:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11928 transitions. [2021-11-17 00:39:41,492 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11928 transitions. Word has length 196 [2021-11-17 00:39:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:39:41,492 INFO L470 AbstractCegarLoop]: Abstraction has 8266 states and 11928 transitions. [2021-11-17 00:39:41,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 00:39:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11928 transitions. [2021-11-17 00:39:41,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-17 00:39:41,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:39:41,505 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:39:41,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-17 00:39:41,505 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:39:41,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:39:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1297887688, now seen corresponding path program 1 times [2021-11-17 00:39:41,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:39:41,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660018220] [2021-11-17 00:39:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:41,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:39:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:39:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:39:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:39:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:39:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:39:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:39:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:39:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:39:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:39:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:39:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:39:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:39:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:39:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:39:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:39:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-17 00:39:41,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:39:41,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660018220] [2021-11-17 00:39:41,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660018220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:39:41,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:39:41,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:39:41,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400225529] [2021-11-17 00:39:41,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:39:41,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:39:41,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:39:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:39:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:39:41,781 INFO L87 Difference]: Start difference. First operand 8266 states and 11928 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-17 00:39:43,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:39:49,874 INFO L93 Difference]: Finished difference Result 18424 states and 27282 transitions. [2021-11-17 00:39:49,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 00:39:49,874 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 1 states have call successors, (23) Word has length 202 [2021-11-17 00:39:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:39:49,972 INFO L225 Difference]: With dead ends: 18424 [2021-11-17 00:39:49,973 INFO L226 Difference]: Without dead ends: 10168 [2021-11-17 00:39:49,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:39:49,994 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 1324 mSDsluCounter, 6312 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 1069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 7850 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1069 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:39:49,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 7850 Invalid, 4979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1069 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-17 00:39:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10168 states. [2021-11-17 00:39:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10168 to 8306. [2021-11-17 00:39:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8306 states, 6053 states have (on average 1.3005121427391375) internal successors, (7872), 6133 states have internal predecessors, (7872), 1670 states have call successors, (1670), 461 states have call predecessors, (1670), 582 states have return successors, (2446), 1807 states have call predecessors, (2446), 1669 states have call successors, (2446) [2021-11-17 00:39:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8306 states to 8306 states and 11988 transitions. [2021-11-17 00:39:50,329 INFO L78 Accepts]: Start accepts. Automaton has 8306 states and 11988 transitions. Word has length 202 [2021-11-17 00:39:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:39:50,330 INFO L470 AbstractCegarLoop]: Abstraction has 8306 states and 11988 transitions. [2021-11-17 00:39:50,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-17 00:39:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 8306 states and 11988 transitions. [2021-11-17 00:39:50,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-17 00:39:50,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:39:50,342 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:39:50,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-17 00:39:50,342 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:39:50,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:39:50,343 INFO L85 PathProgramCache]: Analyzing trace with hash 992705508, now seen corresponding path program 1 times [2021-11-17 00:39:50,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:39:50,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084422910] [2021-11-17 00:39:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:50,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:39:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:39:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:39:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:39:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:39:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:39:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:39:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:39:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:39:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:39:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:39:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:39:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:39:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:39:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:39:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:39:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-17 00:39:50,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:39:50,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084422910] [2021-11-17 00:39:50,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084422910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:39:50,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:39:50,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 00:39:50,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354511259] [2021-11-17 00:39:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:39:50,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 00:39:50,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:39:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 00:39:50,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:39:50,663 INFO L87 Difference]: Start difference. First operand 8306 states and 11988 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-17 00:39:52,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:55,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:04,559 INFO L93 Difference]: Finished difference Result 18112 states and 27368 transitions. [2021-11-17 00:40:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-17 00:40:04,560 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 183 [2021-11-17 00:40:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:04,595 INFO L225 Difference]: With dead ends: 18112 [2021-11-17 00:40:04,595 INFO L226 Difference]: Without dead ends: 9816 [2021-11-17 00:40:04,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-11-17 00:40:04,621 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 3240 mSDsluCounter, 9413 mSDsCounter, 0 mSdLazyCounter, 7204 mSolverCounterSat, 2138 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 11609 SdHoareTripleChecker+Invalid, 9344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2138 IncrementalHoareTripleChecker+Valid, 7204 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:04,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 11609 Invalid, 9344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2138 Valid, 7204 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2021-11-17 00:40:04,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9816 states. [2021-11-17 00:40:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9816 to 8246. [2021-11-17 00:40:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8246 states, 5993 states have (on average 1.2988486567662272) internal successors, (7784), 6073 states have internal predecessors, (7784), 1674 states have call successors, (1674), 461 states have call predecessors, (1674), 578 states have return successors, (2356), 1807 states have call predecessors, (2356), 1673 states have call successors, (2356) [2021-11-17 00:40:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8246 states to 8246 states and 11814 transitions. [2021-11-17 00:40:04,903 INFO L78 Accepts]: Start accepts. Automaton has 8246 states and 11814 transitions. Word has length 183 [2021-11-17 00:40:04,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:40:04,904 INFO L470 AbstractCegarLoop]: Abstraction has 8246 states and 11814 transitions. [2021-11-17 00:40:04,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-17 00:40:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 8246 states and 11814 transitions. [2021-11-17 00:40:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-17 00:40:04,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:40:04,916 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:40:04,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-17 00:40:04,916 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:40:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:40:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2077724972, now seen corresponding path program 1 times [2021-11-17 00:40:04,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:40:04,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799744841] [2021-11-17 00:40:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:04,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:40:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:40:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:40:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:40:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:40:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:40:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:40:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:40:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:40:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:40:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:40:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:40:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:40:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:40:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:40:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:40:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:40:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-17 00:40:05,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:40:05,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799744841] [2021-11-17 00:40:05,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799744841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:40:05,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835314687] [2021-11-17 00:40:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:05,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:40:05,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:40:05,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:40:05,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 00:40:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:05,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:40:05,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:40:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-17 00:40:06,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:40:06,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835314687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:40:06,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:40:06,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-11-17 00:40:06,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516380707] [2021-11-17 00:40:06,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:40:06,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:40:06,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:40:06,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:40:06,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:40:06,070 INFO L87 Difference]: Start difference. First operand 8246 states and 11814 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-17 00:40:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:06,318 INFO L93 Difference]: Finished difference Result 16586 states and 23830 transitions. [2021-11-17 00:40:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:40:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 1 states have call successors, (24) Word has length 216 [2021-11-17 00:40:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:06,351 INFO L225 Difference]: With dead ends: 16586 [2021-11-17 00:40:06,351 INFO L226 Difference]: Without dead ends: 8350 [2021-11-17 00:40:06,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:40:06,374 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 10 mSDsluCounter, 4452 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5942 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:06,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 5942 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:40:06,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8350 states. [2021-11-17 00:40:06,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8350 to 8262. [2021-11-17 00:40:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8262 states, 6009 states have (on average 1.2980529206190714) internal successors, (7800), 6081 states have internal predecessors, (7800), 1674 states have call successors, (1674), 461 states have call predecessors, (1674), 578 states have return successors, (2356), 1815 states have call predecessors, (2356), 1673 states have call successors, (2356) [2021-11-17 00:40:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8262 states to 8262 states and 11830 transitions. [2021-11-17 00:40:06,692 INFO L78 Accepts]: Start accepts. Automaton has 8262 states and 11830 transitions. Word has length 216 [2021-11-17 00:40:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:40:06,693 INFO L470 AbstractCegarLoop]: Abstraction has 8262 states and 11830 transitions. [2021-11-17 00:40:06,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-17 00:40:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8262 states and 11830 transitions. [2021-11-17 00:40:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-17 00:40:06,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:40:06,705 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:40:06,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-17 00:40:06,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:40:06,919 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:40:06,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:40:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash 506419867, now seen corresponding path program 1 times [2021-11-17 00:40:06,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:40:06,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262705050] [2021-11-17 00:40:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:06,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:40:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:40:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:40:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:40:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:40:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:40:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:40:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:40:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:40:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:40:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:40:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:40:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:40:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:40:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:40:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:40:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 00:40:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:40:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-17 00:40:07,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:40:07,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262705050] [2021-11-17 00:40:07,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262705050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:40:07,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361941067] [2021-11-17 00:40:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:07,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:40:07,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:40:07,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:40:07,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 00:40:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:07,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-17 00:40:07,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:40:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-17 00:40:08,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:40:08,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361941067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:40:08,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:40:08,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2021-11-17 00:40:08,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732764504] [2021-11-17 00:40:08,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:40:08,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:40:08,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:40:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:40:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-17 00:40:08,035 INFO L87 Difference]: Start difference. First operand 8262 states and 11830 transitions. Second operand has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-17 00:40:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:08,472 INFO L93 Difference]: Finished difference Result 17074 states and 24610 transitions. [2021-11-17 00:40:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:40:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 214 [2021-11-17 00:40:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:08,507 INFO L225 Difference]: With dead ends: 17074 [2021-11-17 00:40:08,507 INFO L226 Difference]: Without dead ends: 8822 [2021-11-17 00:40:08,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-17 00:40:08,531 INFO L933 BasicCegarLoop]: 1519 mSDtfsCounter, 122 mSDsluCounter, 7429 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 8948 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:08,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 8948 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 00:40:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2021-11-17 00:40:08,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 8294. [2021-11-17 00:40:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8294 states, 6033 states have (on average 1.2968672302337145) internal successors, (7824), 6105 states have internal predecessors, (7824), 1682 states have call successors, (1682), 461 states have call predecessors, (1682), 578 states have return successors, (2364), 1823 states have call predecessors, (2364), 1681 states have call successors, (2364) [2021-11-17 00:40:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8294 states to 8294 states and 11870 transitions. [2021-11-17 00:40:08,907 INFO L78 Accepts]: Start accepts. Automaton has 8294 states and 11870 transitions. Word has length 214 [2021-11-17 00:40:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:40:08,907 INFO L470 AbstractCegarLoop]: Abstraction has 8294 states and 11870 transitions. [2021-11-17 00:40:08,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-17 00:40:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8294 states and 11870 transitions. [2021-11-17 00:40:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-17 00:40:08,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:40:08,918 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:40:08,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-17 00:40:09,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:40:09,119 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:40:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:40:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1901480608, now seen corresponding path program 1 times [2021-11-17 00:40:09,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:40:09,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853601036] [2021-11-17 00:40:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:09,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:40:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:40:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:40:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:40:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:40:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:40:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:40:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:40:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:40:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:40:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:40:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:40:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:40:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:40:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:40:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:40:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 00:40:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:40:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-17 00:40:09,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:40:09,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853601036] [2021-11-17 00:40:09,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853601036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:40:09,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:40:09,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-17 00:40:09,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001409680] [2021-11-17 00:40:09,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:40:09,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-17 00:40:09,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:40:09,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-17 00:40:09,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-11-17 00:40:09,887 INFO L87 Difference]: Start difference. First operand 8294 states and 11870 transitions. Second operand has 21 states, 20 states have (on average 6.95) internal successors, (139), 12 states have internal predecessors, (139), 4 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-17 00:40:11,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:22,145 INFO L93 Difference]: Finished difference Result 18652 states and 27436 transitions. [2021-11-17 00:40:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-17 00:40:22,146 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 6.95) internal successors, (139), 12 states have internal predecessors, (139), 4 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) Word has length 217 [2021-11-17 00:40:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:22,191 INFO L225 Difference]: With dead ends: 18652 [2021-11-17 00:40:22,191 INFO L226 Difference]: Without dead ends: 10368 [2021-11-17 00:40:22,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-11-17 00:40:22,218 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 987 mSDsluCounter, 21780 mSDsCounter, 0 mSdLazyCounter, 9602 mSolverCounterSat, 707 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 23380 SdHoareTripleChecker+Invalid, 10310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 9602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:22,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 23380 Invalid, 10310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [707 Valid, 9602 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2021-11-17 00:40:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-17 00:40:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 8330. [2021-11-17 00:40:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8330 states, 6065 states have (on average 1.2953009068425392) internal successors, (7856), 6129 states have internal predecessors, (7856), 1686 states have call successors, (1686), 461 states have call predecessors, (1686), 578 states have return successors, (2362), 1835 states have call predecessors, (2362), 1685 states have call successors, (2362) [2021-11-17 00:40:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 11904 transitions. [2021-11-17 00:40:22,582 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 11904 transitions. Word has length 217 [2021-11-17 00:40:22,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:40:22,582 INFO L470 AbstractCegarLoop]: Abstraction has 8330 states and 11904 transitions. [2021-11-17 00:40:22,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 6.95) internal successors, (139), 12 states have internal predecessors, (139), 4 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-17 00:40:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 11904 transitions. [2021-11-17 00:40:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-17 00:40:22,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:40:22,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:40:22,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-17 00:40:22,594 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:40:22,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:40:22,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1688754862, now seen corresponding path program 1 times [2021-11-17 00:40:22,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:40:22,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644958661] [2021-11-17 00:40:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:22,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:40:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:40:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:40:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:40:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:40:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:40:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:40:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:40:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:40:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:40:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:40:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:40:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:40:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:40:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:40:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:40:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:40:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 00:40:22,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:40:22,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644958661] [2021-11-17 00:40:22,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644958661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:40:22,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:40:22,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 00:40:22,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315065243] [2021-11-17 00:40:22,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:40:22,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 00:40:22,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:40:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 00:40:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:40:22,868 INFO L87 Difference]: Start difference. First operand 8330 states and 11904 transitions. Second operand has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 7 states have internal predecessors, (126), 4 states have call successors, (23), 7 states have call predecessors, (23), 4 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-17 00:40:24,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:36,119 INFO L93 Difference]: Finished difference Result 19368 states and 28525 transitions. [2021-11-17 00:40:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-17 00:40:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 7 states have internal predecessors, (126), 4 states have call successors, (23), 7 states have call predecessors, (23), 4 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) Word has length 187 [2021-11-17 00:40:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:36,167 INFO L225 Difference]: With dead ends: 19368 [2021-11-17 00:40:36,167 INFO L226 Difference]: Without dead ends: 11048 [2021-11-17 00:40:36,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-11-17 00:40:36,192 INFO L933 BasicCegarLoop]: 2091 mSDtfsCounter, 3479 mSDsluCounter, 8931 mSDsCounter, 0 mSdLazyCounter, 12551 mSolverCounterSat, 2489 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 11022 SdHoareTripleChecker+Invalid, 15041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2489 IncrementalHoareTripleChecker+Valid, 12551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:36,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 11022 Invalid, 15041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2489 Valid, 12551 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2021-11-17 00:40:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11048 states. [2021-11-17 00:40:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11048 to 9098. [2021-11-17 00:40:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9098 states, 6635 states have (on average 1.290278824415976) internal successors, (8561), 6670 states have internal predecessors, (8561), 1850 states have call successors, (1850), 461 states have call predecessors, (1850), 612 states have return successors, (2678), 2074 states have call predecessors, (2678), 1849 states have call successors, (2678) [2021-11-17 00:40:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9098 states to 9098 states and 13089 transitions. [2021-11-17 00:40:36,533 INFO L78 Accepts]: Start accepts. Automaton has 9098 states and 13089 transitions. Word has length 187 [2021-11-17 00:40:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:40:36,533 INFO L470 AbstractCegarLoop]: Abstraction has 9098 states and 13089 transitions. [2021-11-17 00:40:36,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 7 states have internal predecessors, (126), 4 states have call successors, (23), 7 states have call predecessors, (23), 4 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-17 00:40:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 9098 states and 13089 transitions. [2021-11-17 00:40:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-17 00:40:36,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:40:36,546 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:40:36,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-17 00:40:36,546 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:40:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:40:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash -105532659, now seen corresponding path program 1 times [2021-11-17 00:40:36,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:40:36,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148963800] [2021-11-17 00:40:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:36,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:40:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:40:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:40:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:40:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:40:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:40:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:40:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:40:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:40:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:40:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:40:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:40:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:40:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:40:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:40:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 00:40:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:40:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 00:40:36,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:40:36,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148963800] [2021-11-17 00:40:36,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148963800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:40:36,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:40:36,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:40:36,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491054150] [2021-11-17 00:40:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:40:36,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:40:36,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:40:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:40:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:40:36,784 INFO L87 Difference]: Start difference. First operand 9098 states and 13089 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-17 00:40:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:46,162 INFO L93 Difference]: Finished difference Result 20078 states and 29708 transitions. [2021-11-17 00:40:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 00:40:46,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 188 [2021-11-17 00:40:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:46,211 INFO L225 Difference]: With dead ends: 20078 [2021-11-17 00:40:46,211 INFO L226 Difference]: Without dead ends: 10990 [2021-11-17 00:40:46,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-11-17 00:40:46,240 INFO L933 BasicCegarLoop]: 2207 mSDtfsCounter, 3231 mSDsluCounter, 6569 mSDsCounter, 0 mSdLazyCounter, 6011 mSolverCounterSat, 2112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 8776 SdHoareTripleChecker+Invalid, 8123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2112 IncrementalHoareTripleChecker+Valid, 6011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:46,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 8776 Invalid, 8123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2112 Valid, 6011 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-17 00:40:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10990 states. [2021-11-17 00:40:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10990 to 9106. [2021-11-17 00:40:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9106 states, 6643 states have (on average 1.2899292488333585) internal successors, (8569), 6678 states have internal predecessors, (8569), 1850 states have call successors, (1850), 461 states have call predecessors, (1850), 612 states have return successors, (2678), 2074 states have call predecessors, (2678), 1849 states have call successors, (2678) [2021-11-17 00:40:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 13097 transitions. [2021-11-17 00:40:46,639 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 13097 transitions. Word has length 188 [2021-11-17 00:40:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:40:46,640 INFO L470 AbstractCegarLoop]: Abstraction has 9106 states and 13097 transitions. [2021-11-17 00:40:46,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-17 00:40:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 13097 transitions. [2021-11-17 00:40:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-17 00:40:46,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:40:46,652 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:40:46,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-17 00:40:46,653 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:40:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:40:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash 63456984, now seen corresponding path program 1 times [2021-11-17 00:40:46,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:40:46,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447013378] [2021-11-17 00:40:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:46,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:40:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:40:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:40:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:40:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:40:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:40:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:40:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:40:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:40:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:40:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:40:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:40:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:40:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:40:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:40:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:40:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:40:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-17 00:40:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 00:40:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-17 00:40:46,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:40:46,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447013378] [2021-11-17 00:40:46,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447013378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:40:46,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:40:46,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:40:46,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317375673] [2021-11-17 00:40:46,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:40:46,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:40:46,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:40:46,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:40:46,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:40:46,979 INFO L87 Difference]: Start difference. First operand 9106 states and 13097 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (26), 7 states have call predecessors, (26), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-17 00:40:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:55,211 INFO L93 Difference]: Finished difference Result 21400 states and 31859 transitions. [2021-11-17 00:40:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:40:55,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (26), 7 states have call predecessors, (26), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 223 [2021-11-17 00:40:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:55,265 INFO L225 Difference]: With dead ends: 21400 [2021-11-17 00:40:55,265 INFO L226 Difference]: Without dead ends: 12304 [2021-11-17 00:40:55,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:40:55,293 INFO L933 BasicCegarLoop]: 1588 mSDtfsCounter, 679 mSDsluCounter, 4244 mSDsCounter, 0 mSdLazyCounter, 3722 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 5832 SdHoareTripleChecker+Invalid, 4097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 3722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:55,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 5832 Invalid, 4097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 3722 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-17 00:40:55,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12304 states. [2021-11-17 00:40:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12304 to 10066. [2021-11-17 00:40:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10066 states, 7339 states have (on average 1.2935004769042104) internal successors, (9493), 7398 states have internal predecessors, (9493), 2114 states have call successors, (2114), 461 states have call predecessors, (2114), 612 states have return successors, (3002), 2350 states have call predecessors, (3002), 2113 states have call successors, (3002) [2021-11-17 00:40:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 14609 transitions. [2021-11-17 00:40:55,650 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 14609 transitions. Word has length 223 [2021-11-17 00:40:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:40:55,650 INFO L470 AbstractCegarLoop]: Abstraction has 10066 states and 14609 transitions. [2021-11-17 00:40:55,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (26), 7 states have call predecessors, (26), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-17 00:40:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 14609 transitions. [2021-11-17 00:40:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-17 00:40:55,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:40:55,664 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:40:55,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-17 00:40:55,664 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:40:55,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:40:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash 811487953, now seen corresponding path program 1 times [2021-11-17 00:40:55,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:40:55,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135245508] [2021-11-17 00:40:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:55,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:40:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:40:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:40:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:40:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:40:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:40:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:40:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:40:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:40:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:40:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:40:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:40:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:40:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:40:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:40:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:40:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:40:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:40:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 00:40:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:40:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-17 00:40:55,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:40:55,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135245508] [2021-11-17 00:40:55,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135245508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:40:55,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:40:55,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 00:40:55,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656940984] [2021-11-17 00:40:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:40:55,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 00:40:55,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:40:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 00:40:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:40:55,926 INFO L87 Difference]: Start difference. First operand 10066 states and 14609 transitions. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-17 00:40:57,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:03,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:41:03,004 INFO L93 Difference]: Finished difference Result 24388 states and 36763 transitions. [2021-11-17 00:41:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:41:03,004 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 216 [2021-11-17 00:41:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:41:03,073 INFO L225 Difference]: With dead ends: 24388 [2021-11-17 00:41:03,074 INFO L226 Difference]: Without dead ends: 14308 [2021-11-17 00:41:03,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:41:03,108 INFO L933 BasicCegarLoop]: 1603 mSDtfsCounter, 1780 mSDsluCounter, 7332 mSDsCounter, 0 mSdLazyCounter, 3839 mSolverCounterSat, 1450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 8935 SdHoareTripleChecker+Invalid, 5289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1450 IncrementalHoareTripleChecker+Valid, 3839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:41:03,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 8935 Invalid, 5289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1450 Valid, 3839 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-17 00:41:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14308 states. [2021-11-17 00:41:03,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14308 to 10174. [2021-11-17 00:41:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10174 states, 7439 states have (on average 1.292781287807501) internal successors, (9617), 7494 states have internal predecessors, (9617), 2114 states have call successors, (2114), 461 states have call predecessors, (2114), 620 states have return successors, (3026), 2362 states have call predecessors, (3026), 2113 states have call successors, (3026) [2021-11-17 00:41:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10174 states to 10174 states and 14757 transitions. [2021-11-17 00:41:03,626 INFO L78 Accepts]: Start accepts. Automaton has 10174 states and 14757 transitions. Word has length 216 [2021-11-17 00:41:03,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:41:03,627 INFO L470 AbstractCegarLoop]: Abstraction has 10174 states and 14757 transitions. [2021-11-17 00:41:03,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-17 00:41:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 10174 states and 14757 transitions. [2021-11-17 00:41:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-17 00:41:03,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:41:03,641 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:41:03,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-17 00:41:03,641 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:41:03,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:41:03,641 INFO L85 PathProgramCache]: Analyzing trace with hash -449753395, now seen corresponding path program 1 times [2021-11-17 00:41:03,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:41:03,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584099244] [2021-11-17 00:41:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:03,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:41:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:41:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:41:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:41:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:41:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:41:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:41:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:41:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:41:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:41:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:41:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:41:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:41:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:41:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 00:41:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:41:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 00:41:03,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:41:03,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584099244] [2021-11-17 00:41:03,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584099244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:41:03,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:41:03,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-17 00:41:03,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836032512] [2021-11-17 00:41:03,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:41:03,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-17 00:41:03,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:41:03,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-17 00:41:03,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:41:03,970 INFO L87 Difference]: Start difference. First operand 10174 states and 14757 transitions. Second operand has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 7 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-17 00:41:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:41:14,777 INFO L93 Difference]: Finished difference Result 23204 states and 34894 transitions. [2021-11-17 00:41:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-17 00:41:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 7 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 188 [2021-11-17 00:41:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:41:14,838 INFO L225 Difference]: With dead ends: 23204 [2021-11-17 00:41:14,839 INFO L226 Difference]: Without dead ends: 13040 [2021-11-17 00:41:14,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-11-17 00:41:14,881 INFO L933 BasicCegarLoop]: 1935 mSDtfsCounter, 3911 mSDsluCounter, 5933 mSDsCounter, 0 mSdLazyCounter, 11232 mSolverCounterSat, 2647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 7868 SdHoareTripleChecker+Invalid, 13879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2647 IncrementalHoareTripleChecker+Valid, 11232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:41:14,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4204 Valid, 7868 Invalid, 13879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2647 Valid, 11232 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-17 00:41:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13040 states. [2021-11-17 00:41:15,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13040 to 10140. [2021-11-17 00:41:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10140 states, 7421 states have (on average 1.2940304541166958) internal successors, (9603), 7474 states have internal predecessors, (9603), 2098 states have call successors, (2098), 461 states have call predecessors, (2098), 620 states have return successors, (3002), 2340 states have call predecessors, (3002), 2097 states have call successors, (3002) [2021-11-17 00:41:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 14703 transitions. [2021-11-17 00:41:15,284 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 14703 transitions. Word has length 188 [2021-11-17 00:41:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:41:15,284 INFO L470 AbstractCegarLoop]: Abstraction has 10140 states and 14703 transitions. [2021-11-17 00:41:15,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 7 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-17 00:41:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 14703 transitions. [2021-11-17 00:41:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-17 00:41:15,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:41:15,297 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:41:15,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-17 00:41:15,298 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:41:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:41:15,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2044097410, now seen corresponding path program 1 times [2021-11-17 00:41:15,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:41:15,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853925044] [2021-11-17 00:41:15,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:15,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:41:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:41:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:41:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:41:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:41:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:41:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:41:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:41:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:41:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:41:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:41:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:41:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:41:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:41:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 00:41:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:41:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-17 00:41:16,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:41:16,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853925044] [2021-11-17 00:41:16,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853925044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:41:16,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987118196] [2021-11-17 00:41:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:16,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:41:16,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:41:16,226 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:41:16,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-17 00:41:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:16,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-17 00:41:16,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:41:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 00:41:17,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:41:17,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987118196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:41:17,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:41:17,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [25] total 28 [2021-11-17 00:41:17,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600618703] [2021-11-17 00:41:17,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:41:17,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-17 00:41:17,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:41:17,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-17 00:41:17,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-11-17 00:41:17,213 INFO L87 Difference]: Start difference. First operand 10140 states and 14703 transitions. Second operand has 16 states, 15 states have (on average 8.8) internal successors, (132), 12 states have internal predecessors, (132), 4 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-17 00:41:17,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:41:17,825 INFO L93 Difference]: Finished difference Result 20510 states and 29982 transitions. [2021-11-17 00:41:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-17 00:41:17,825 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.8) internal successors, (132), 12 states have internal predecessors, (132), 4 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 4 states have call successors, (22) Word has length 190 [2021-11-17 00:41:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:41:17,867 INFO L225 Difference]: With dead ends: 20510 [2021-11-17 00:41:17,867 INFO L226 Difference]: Without dead ends: 10380 [2021-11-17 00:41:17,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 226 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2021-11-17 00:41:17,897 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 41 mSDsluCounter, 21014 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 22520 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:41:17,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 22520 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 00:41:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10380 states. [2021-11-17 00:41:18,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10380 to 10164. [2021-11-17 00:41:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10164 states, 7445 states have (on average 1.2930826057756883) internal successors, (9627), 7490 states have internal predecessors, (9627), 2098 states have call successors, (2098), 461 states have call predecessors, (2098), 620 states have return successors, (3002), 2348 states have call predecessors, (3002), 2097 states have call successors, (3002) [2021-11-17 00:41:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10164 states to 10164 states and 14727 transitions. [2021-11-17 00:41:18,310 INFO L78 Accepts]: Start accepts. Automaton has 10164 states and 14727 transitions. Word has length 190 [2021-11-17 00:41:18,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:41:18,311 INFO L470 AbstractCegarLoop]: Abstraction has 10164 states and 14727 transitions. [2021-11-17 00:41:18,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.8) internal successors, (132), 12 states have internal predecessors, (132), 4 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-17 00:41:18,311 INFO L276 IsEmpty]: Start isEmpty. Operand 10164 states and 14727 transitions. [2021-11-17 00:41:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-17 00:41:18,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:41:18,325 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:41:18,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-17 00:41:18,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-17 00:41:18,526 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:41:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:41:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1601764916, now seen corresponding path program 1 times [2021-11-17 00:41:18,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:41:18,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329191908] [2021-11-17 00:41:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:18,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:41:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:41:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:41:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:41:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:41:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:41:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:41:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:41:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:41:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:41:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 00:41:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-17 00:41:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:41:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-17 00:41:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:41:18,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:41:18,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329191908] [2021-11-17 00:41:18,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329191908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:41:18,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:41:18,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:41:18,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491266749] [2021-11-17 00:41:18,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:41:18,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:41:18,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:41:18,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:41:18,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:41:18,834 INFO L87 Difference]: Start difference. First operand 10164 states and 14727 transitions. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 00:41:20,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:21,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:41:27,702 INFO L93 Difference]: Finished difference Result 21300 states and 31624 transitions. [2021-11-17 00:41:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:41:27,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2021-11-17 00:41:27,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:41:27,744 INFO L225 Difference]: With dead ends: 21300 [2021-11-17 00:41:27,744 INFO L226 Difference]: Without dead ends: 11130 [2021-11-17 00:41:27,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:41:27,776 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 767 mSDsluCounter, 4805 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 6273 SdHoareTripleChecker+Invalid, 3474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:41:27,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 6273 Invalid, 3474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-17 00:41:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11130 states. [2021-11-17 00:41:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11130 to 10200. [2021-11-17 00:41:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10200 states, 7477 states have (on average 1.292898221211716) internal successors, (9667), 7522 states have internal predecessors, (9667), 2098 states have call successors, (2098), 465 states have call predecessors, (2098), 624 states have return successors, (2996), 2348 states have call predecessors, (2996), 2097 states have call successors, (2996) [2021-11-17 00:41:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10200 states to 10200 states and 14761 transitions. [2021-11-17 00:41:28,185 INFO L78 Accepts]: Start accepts. Automaton has 10200 states and 14761 transitions. Word has length 193 [2021-11-17 00:41:28,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:41:28,186 INFO L470 AbstractCegarLoop]: Abstraction has 10200 states and 14761 transitions. [2021-11-17 00:41:28,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 00:41:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 10200 states and 14761 transitions. [2021-11-17 00:41:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-17 00:41:28,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:41:28,201 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:41:28,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-17 00:41:28,201 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:41:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:41:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash -179125858, now seen corresponding path program 1 times [2021-11-17 00:41:28,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:41:28,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348125918] [2021-11-17 00:41:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:28,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:41:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:41:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:41:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:41:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:41:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:41:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:41:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:41:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:41:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:41:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:41:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:41:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 00:41:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-17 00:41:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:41:28,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:41:28,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348125918] [2021-11-17 00:41:28,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348125918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:41:28,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090226762] [2021-11-17 00:41:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:28,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:41:28,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:41:28,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:41:28,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-17 00:41:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:28,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-17 00:41:28,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:41:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 00:41:29,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:41:29,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090226762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:41:29,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:41:29,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-11-17 00:41:29,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002916726] [2021-11-17 00:41:29,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:41:29,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:41:29,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:41:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:41:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-17 00:41:29,350 INFO L87 Difference]: Start difference. First operand 10200 states and 14761 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-17 00:41:31,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:41:44,276 INFO L93 Difference]: Finished difference Result 42524 states and 72819 transitions. [2021-11-17 00:41:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 00:41:44,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 193 [2021-11-17 00:41:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:41:44,484 INFO L225 Difference]: With dead ends: 42524 [2021-11-17 00:41:44,484 INFO L226 Difference]: Without dead ends: 37125 [2021-11-17 00:41:44,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-11-17 00:41:44,547 INFO L933 BasicCegarLoop]: 2246 mSDtfsCounter, 8303 mSDsluCounter, 7329 mSDsCounter, 0 mSdLazyCounter, 13270 mSolverCounterSat, 4685 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8946 SdHoareTripleChecker+Valid, 9575 SdHoareTripleChecker+Invalid, 17956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4685 IncrementalHoareTripleChecker+Valid, 13270 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:41:44,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8946 Valid, 9575 Invalid, 17956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4685 Valid, 13270 Invalid, 1 Unknown, 0 Unchecked, 13.2s Time] [2021-11-17 00:41:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37125 states. [2021-11-17 00:41:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37125 to 35657. [2021-11-17 00:41:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35657 states, 25908 states have (on average 1.2838891462096649) internal successors, (33263), 26015 states have internal predecessors, (33263), 7787 states have call successors, (7787), 1158 states have call predecessors, (7787), 1961 states have return successors, (19589), 9015 states have call predecessors, (19589), 7786 states have call successors, (19589) [2021-11-17 00:41:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35657 states to 35657 states and 60639 transitions. [2021-11-17 00:41:46,487 INFO L78 Accepts]: Start accepts. Automaton has 35657 states and 60639 transitions. Word has length 193 [2021-11-17 00:41:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:41:46,487 INFO L470 AbstractCegarLoop]: Abstraction has 35657 states and 60639 transitions. [2021-11-17 00:41:46,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-17 00:41:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 35657 states and 60639 transitions. [2021-11-17 00:41:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-17 00:41:46,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:41:46,509 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:41:46,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-17 00:41:46,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:41:46,711 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:41:46,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:41:46,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1857275359, now seen corresponding path program 1 times [2021-11-17 00:41:46,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:41:46,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53512559] [2021-11-17 00:41:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:46,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:41:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:41:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:41:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:41:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:41:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:41:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:41:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:41:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:41:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:41:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:41:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:41:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:41:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 00:41:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:41:46,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:41:46,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53512559] [2021-11-17 00:41:46,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53512559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:41:46,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:41:46,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:41:46,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582865713] [2021-11-17 00:41:46,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:41:46,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:41:46,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:41:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:41:46,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:41:46,969 INFO L87 Difference]: Start difference. First operand 35657 states and 60639 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 00:41:48,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:41:54,691 INFO L93 Difference]: Finished difference Result 73651 states and 137223 transitions. [2021-11-17 00:41:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:41:54,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 195 [2021-11-17 00:41:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:41:54,902 INFO L225 Difference]: With dead ends: 73651 [2021-11-17 00:41:54,903 INFO L226 Difference]: Without dead ends: 38004 [2021-11-17 00:41:55,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:41:55,231 INFO L933 BasicCegarLoop]: 1486 mSDtfsCounter, 1489 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 1339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 5821 SdHoareTripleChecker+Invalid, 3659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1339 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:41:55,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 5821 Invalid, 3659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1339 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-17 00:41:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38004 states. [2021-11-17 00:41:56,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38004 to 35689. [2021-11-17 00:41:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35689 states, 25936 states have (on average 1.283736890808143) internal successors, (33295), 26047 states have internal predecessors, (33295), 7787 states have call successors, (7787), 1158 states have call predecessors, (7787), 1965 states have return successors, (19613), 9015 states have call predecessors, (19613), 7786 states have call successors, (19613) [2021-11-17 00:41:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35689 states to 35689 states and 60695 transitions. [2021-11-17 00:41:57,156 INFO L78 Accepts]: Start accepts. Automaton has 35689 states and 60695 transitions. Word has length 195 [2021-11-17 00:41:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:41:57,156 INFO L470 AbstractCegarLoop]: Abstraction has 35689 states and 60695 transitions. [2021-11-17 00:41:57,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 00:41:57,156 INFO L276 IsEmpty]: Start isEmpty. Operand 35689 states and 60695 transitions. [2021-11-17 00:41:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-17 00:41:57,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:41:57,177 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:41:57,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-17 00:41:57,177 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:41:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:41:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1092437627, now seen corresponding path program 1 times [2021-11-17 00:41:57,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:41:57,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969908735] [2021-11-17 00:41:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:57,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:41:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:41:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:41:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:41:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:41:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:41:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:41:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-17 00:41:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:41:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:41:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:41:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:41:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:41:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:41:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:41:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 00:41:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:41:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:41:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:41:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-11-17 00:41:57,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:41:57,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969908735] [2021-11-17 00:41:57,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969908735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:41:57,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:41:57,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 00:41:57,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104577068] [2021-11-17 00:41:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:41:57,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 00:41:57,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:41:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 00:41:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:41:57,420 INFO L87 Difference]: Start difference. First operand 35689 states and 60695 transitions. Second operand has 13 states, 12 states have (on average 10.333333333333334) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-17 00:42:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:42:08,274 INFO L93 Difference]: Finished difference Result 90990 states and 160390 transitions. [2021-11-17 00:42:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-17 00:42:08,274 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.333333333333334) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 206 [2021-11-17 00:42:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:42:08,615 INFO L225 Difference]: With dead ends: 90990 [2021-11-17 00:42:08,615 INFO L226 Difference]: Without dead ends: 55271 [2021-11-17 00:42:08,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2021-11-17 00:42:08,837 INFO L933 BasicCegarLoop]: 2391 mSDtfsCounter, 2356 mSDsluCounter, 14911 mSDsCounter, 0 mSdLazyCounter, 6927 mSolverCounterSat, 1620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2489 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 8547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1620 IncrementalHoareTripleChecker+Valid, 6927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:42:08,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2489 Valid, 17302 Invalid, 8547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1620 Valid, 6927 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-17 00:42:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55271 states. [2021-11-17 00:42:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55271 to 49906. [2021-11-17 00:42:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49906 states, 36633 states have (on average 1.2869543853902219) internal successors, (47145), 36725 states have internal predecessors, (47145), 10568 states have call successors, (10568), 1623 states have call predecessors, (10568), 2704 states have return successors, (25232), 12251 states have call predecessors, (25232), 10567 states have call successors, (25232) [2021-11-17 00:42:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49906 states to 49906 states and 82945 transitions. [2021-11-17 00:42:11,773 INFO L78 Accepts]: Start accepts. Automaton has 49906 states and 82945 transitions. Word has length 206 [2021-11-17 00:42:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:42:11,774 INFO L470 AbstractCegarLoop]: Abstraction has 49906 states and 82945 transitions. [2021-11-17 00:42:11,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.333333333333334) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-17 00:42:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 49906 states and 82945 transitions. [2021-11-17 00:42:11,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-17 00:42:11,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:42:11,800 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:42:11,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-17 00:42:11,800 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:42:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:42:11,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1204035036, now seen corresponding path program 1 times [2021-11-17 00:42:11,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:42:11,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895359183] [2021-11-17 00:42:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:42:11,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:42:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:42:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:42:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:42:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:42:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:42:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:42:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:42:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:42:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:42:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:11,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:42:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:42:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:42:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:42:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:42:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:42:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 00:42:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 00:42:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:42:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 00:42:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:42:12,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:42:12,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895359183] [2021-11-17 00:42:12,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895359183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:42:12,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:42:12,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:42:12,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770398101] [2021-11-17 00:42:12,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:42:12,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:42:12,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:42:12,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:42:12,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:42:12,083 INFO L87 Difference]: Start difference. First operand 49906 states and 82945 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 00:42:13,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:42:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:42:19,135 INFO L93 Difference]: Finished difference Result 95865 states and 169949 transitions. [2021-11-17 00:42:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:42:19,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 197 [2021-11-17 00:42:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:42:19,439 INFO L225 Difference]: With dead ends: 95865 [2021-11-17 00:42:19,439 INFO L226 Difference]: Without dead ends: 52839 [2021-11-17 00:42:19,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:42:19,721 INFO L933 BasicCegarLoop]: 1452 mSDtfsCounter, 1530 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 1396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 3931 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:42:19,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 3931 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-17 00:42:19,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52839 states. [2021-11-17 00:42:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52839 to 49870. [2021-11-17 00:42:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49870 states, 36603 states have (on average 1.2858782067043686) internal successors, (47067), 36689 states have internal predecessors, (47067), 10568 states have call successors, (10568), 1623 states have call predecessors, (10568), 2698 states have return successors, (24692), 12251 states have call predecessors, (24692), 10567 states have call successors, (24692) [2021-11-17 00:42:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49870 states to 49870 states and 82327 transitions. [2021-11-17 00:42:22,239 INFO L78 Accepts]: Start accepts. Automaton has 49870 states and 82327 transitions. Word has length 197 [2021-11-17 00:42:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:42:22,240 INFO L470 AbstractCegarLoop]: Abstraction has 49870 states and 82327 transitions. [2021-11-17 00:42:22,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 00:42:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 49870 states and 82327 transitions. [2021-11-17 00:42:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-17 00:42:22,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:42:22,264 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:42:22,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-17 00:42:22,265 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:42:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:42:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash 383818758, now seen corresponding path program 1 times [2021-11-17 00:42:22,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:42:22,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473765203] [2021-11-17 00:42:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:42:22,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:42:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:42:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:42:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:42:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:42:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:42:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:42:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:42:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:42:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:42:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:42:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:42:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:42:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:42:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:42:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:42:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 00:42:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:42:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 00:42:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:42:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-17 00:42:22,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:42:22,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473765203] [2021-11-17 00:42:22,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473765203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:42:22,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735910104] [2021-11-17 00:42:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:42:22,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:42:22,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:42:22,518 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:42:22,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-17 00:42:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:22,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:42:22,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:42:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-17 00:42:23,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:42:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-17 00:42:23,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735910104] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:42:23,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:42:23,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 11 [2021-11-17 00:42:23,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112526390] [2021-11-17 00:42:23,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:42:23,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 00:42:23,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:42:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 00:42:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:42:23,583 INFO L87 Difference]: Start difference. First operand 49870 states and 82327 transitions. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 6 states have internal predecessors, (168), 4 states have call successors, (46), 7 states have call predecessors, (46), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-17 00:42:25,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:42:27,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:42:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:42:34,654 INFO L93 Difference]: Finished difference Result 107211 states and 186530 transitions. [2021-11-17 00:42:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:42:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 6 states have internal predecessors, (168), 4 states have call successors, (46), 7 states have call predecessors, (46), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 197 [2021-11-17 00:42:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:42:35,187 INFO L225 Difference]: With dead ends: 107211 [2021-11-17 00:42:35,187 INFO L226 Difference]: Without dead ends: 57351 [2021-11-17 00:42:35,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:42:35,441 INFO L933 BasicCegarLoop]: 1502 mSDtfsCounter, 982 mSDsluCounter, 3721 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 787 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 5223 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 787 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:42:35,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 5223 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [787 Valid, 1971 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2021-11-17 00:42:35,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57351 states. [2021-11-17 00:42:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57351 to 54382. [2021-11-17 00:42:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54382 states, 39819 states have (on average 1.2820763956904995) internal successors, (51051), 39899 states have internal predecessors, (51051), 11864 states have call successors, (11864), 1623 states have call predecessors, (11864), 2698 states have return successors, (27068), 13553 states have call predecessors, (27068), 11863 states have call successors, (27068) [2021-11-17 00:42:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54382 states to 54382 states and 89983 transitions. [2021-11-17 00:42:38,456 INFO L78 Accepts]: Start accepts. Automaton has 54382 states and 89983 transitions. Word has length 197 [2021-11-17 00:42:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:42:38,456 INFO L470 AbstractCegarLoop]: Abstraction has 54382 states and 89983 transitions. [2021-11-17 00:42:38,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 6 states have internal predecessors, (168), 4 states have call successors, (46), 7 states have call predecessors, (46), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-17 00:42:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 54382 states and 89983 transitions. [2021-11-17 00:42:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-17 00:42:38,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:42:38,482 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:42:38,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-17 00:42:38,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-17 00:42:38,682 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:42:38,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:42:38,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1743381351, now seen corresponding path program 1 times [2021-11-17 00:42:38,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:42:38,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129849105] [2021-11-17 00:42:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:42:38,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:42:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:38,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:42:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:42:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:42:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:38,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:42:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:42:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:42:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:42:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:42:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:42:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:42:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:42:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:42:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:42:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:42:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 00:42:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 00:42:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:42:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-17 00:42:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 00:42:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-17 00:42:39,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:42:39,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129849105] [2021-11-17 00:42:39,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129849105] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:42:39,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400635147] [2021-11-17 00:42:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:42:39,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:42:39,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:42:39,366 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:42:39,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-17 00:42:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:39,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-17 00:42:39,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:42:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-17 00:42:40,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:42:40,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400635147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:42:40,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:42:40,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [18] total 22 [2021-11-17 00:42:40,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527079694] [2021-11-17 00:42:40,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:42:40,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-17 00:42:40,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:42:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-17 00:42:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-17 00:42:40,403 INFO L87 Difference]: Start difference. First operand 54382 states and 89983 transitions. Second operand has 14 states, 13 states have (on average 9.692307692307692) internal successors, (126), 11 states have internal predecessors, (126), 3 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-17 00:42:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:42:43,893 INFO L93 Difference]: Finished difference Result 108182 states and 188512 transitions. [2021-11-17 00:42:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-17 00:42:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.692307692307692) internal successors, (126), 11 states have internal predecessors, (126), 3 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) Word has length 213 [2021-11-17 00:42:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:42:44,232 INFO L225 Difference]: With dead ends: 108182 [2021-11-17 00:42:44,232 INFO L226 Difference]: Without dead ends: 53798 [2021-11-17 00:42:44,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 261 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-11-17 00:42:44,856 INFO L933 BasicCegarLoop]: 1482 mSDtfsCounter, 21 mSDsluCounter, 17744 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 19226 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:42:44,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 19226 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 00:42:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53798 states. [2021-11-17 00:42:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53798 to 53414. [2021-11-17 00:42:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53414 states, 38961 states have (on average 1.282692949359616) internal successors, (49975), 39145 states have internal predecessors, (49975), 11798 states have call successors, (11798), 1623 states have call predecessors, (11798), 2654 states have return successors, (25720), 13339 states have call predecessors, (25720), 11797 states have call successors, (25720) [2021-11-17 00:42:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53414 states to 53414 states and 87493 transitions. [2021-11-17 00:42:47,840 INFO L78 Accepts]: Start accepts. Automaton has 53414 states and 87493 transitions. Word has length 213 [2021-11-17 00:42:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:42:47,840 INFO L470 AbstractCegarLoop]: Abstraction has 53414 states and 87493 transitions. [2021-11-17 00:42:47,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.692307692307692) internal successors, (126), 11 states have internal predecessors, (126), 3 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-17 00:42:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 53414 states and 87493 transitions. [2021-11-17 00:42:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-17 00:42:47,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:42:47,882 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:42:47,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-17 00:42:48,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-17 00:42:48,084 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:42:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:42:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash 966142871, now seen corresponding path program 1 times [2021-11-17 00:42:48,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:42:48,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569891602] [2021-11-17 00:42:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:42:48,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:42:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:42:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:42:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:42:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:42:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:42:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:42:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:42:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:42:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:42:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:42:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:42:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:42:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:42:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:42:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:42:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-17 00:42:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:42:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:42:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-17 00:42:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:42:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:42:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:42:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-17 00:42:48,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:42:48,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569891602] [2021-11-17 00:42:48,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569891602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:42:48,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:42:48,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:42:48,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21916191] [2021-11-17 00:42:48,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:42:48,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:42:48,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:42:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:42:48,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:42:48,367 INFO L87 Difference]: Start difference. First operand 53414 states and 87493 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-17 00:42:50,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:42:51,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:42:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:42:59,003 INFO L93 Difference]: Finished difference Result 109297 states and 184324 transitions. [2021-11-17 00:42:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:42:59,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 211 [2021-11-17 00:42:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:42:59,326 INFO L225 Difference]: With dead ends: 109297 [2021-11-17 00:42:59,326 INFO L226 Difference]: Without dead ends: 55893 [2021-11-17 00:42:59,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:42:59,736 INFO L933 BasicCegarLoop]: 1454 mSDtfsCounter, 1147 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 1049 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1049 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:42:59,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 4454 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1049 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-17 00:42:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55893 states. [2021-11-17 00:43:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55893 to 53414. [2021-11-17 00:43:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53414 states, 38961 states have (on average 1.2803829470496138) internal successors, (49885), 39145 states have internal predecessors, (49885), 11798 states have call successors, (11798), 1623 states have call predecessors, (11798), 2654 states have return successors, (25720), 13339 states have call predecessors, (25720), 11797 states have call successors, (25720) [2021-11-17 00:43:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53414 states to 53414 states and 87403 transitions. [2021-11-17 00:43:02,554 INFO L78 Accepts]: Start accepts. Automaton has 53414 states and 87403 transitions. Word has length 211 [2021-11-17 00:43:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:43:02,555 INFO L470 AbstractCegarLoop]: Abstraction has 53414 states and 87403 transitions. [2021-11-17 00:43:02,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-17 00:43:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 53414 states and 87403 transitions. [2021-11-17 00:43:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-17 00:43:02,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:43:02,583 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:43:02,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-17 00:43:02,583 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:43:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:43:02,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2067089615, now seen corresponding path program 1 times [2021-11-17 00:43:02,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:43:02,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671858396] [2021-11-17 00:43:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:43:02,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:43:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:43:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:43:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:43:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:43:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:43:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:43:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:43:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:43:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:43:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:43:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:43:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:43:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:43:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:43:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:43:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:43:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:43:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:43:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:43:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:43:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:43:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:43:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:43:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 00:43:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-17 00:43:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 00:43:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-17 00:43:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:43:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-17 00:43:02,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:43:02,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671858396] [2021-11-17 00:43:02,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671858396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:43:02,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:43:02,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-17 00:43:02,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635923786] [2021-11-17 00:43:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:43:02,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-17 00:43:02,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:43:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-17 00:43:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:43:02,936 INFO L87 Difference]: Start difference. First operand 53414 states and 87403 transitions. Second operand has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 7 states have internal predecessors, (139), 4 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 00:43:04,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []