./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-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 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 04:00:00,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 04:00:00,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 04:00:00,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 04:00:00,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 04:00:00,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 04:00:00,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 04:00:00,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 04:00:00,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 04:00:00,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 04:00:00,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 04:00:00,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 04:00:00,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 04:00:00,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 04:00:00,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 04:00:00,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 04:00:00,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 04:00:00,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 04:00:00,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 04:00:00,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 04:00:00,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 04:00:00,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 04:00:00,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 04:00:00,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 04:00:00,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 04:00:00,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 04:00:00,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 04:00:00,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 04:00:00,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 04:00:00,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 04:00:00,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 04:00:00,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 04:00:00,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 04:00:00,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 04:00:00,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 04:00:00,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 04:00:00,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 04:00:00,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 04:00:00,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 04:00:00,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 04:00:00,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 04:00:00,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 04:00:00,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 04:00:00,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 04:00:00,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 04:00:00,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 04:00:00,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 04:00:00,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 04:00:00,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 04:00:00,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 04:00:00,863 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 04:00:00,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 04:00:00,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 04:00:00,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 04:00:00,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 04:00:00,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 04:00:00,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 04:00:00,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 04:00:00,865 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 04:00:00,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 04:00:00,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 04:00:00,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 04:00:00,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 04:00:00,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:00:00,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 04:00:00,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 04:00:00,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 04:00:00,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 04:00:00,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 04:00:00,867 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 04:00:00,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 04:00:00,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 04:00:00,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 04:00:00,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-12-18 04:00:01,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 04:00:01,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 04:00:01,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 04:00:01,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 04:00:01,098 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 04:00:01,099 INFO L432 ainManager$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 [2021-12-18 04:00:01,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8917da92b/a26ace90042446d18bc73afd323e824d/FLAGd20d43280 [2021-12-18 04:00:01,795 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 04:00:01,795 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 [2021-12-18 04:00:01,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8917da92b/a26ace90042446d18bc73afd323e824d/FLAGd20d43280 [2021-12-18 04:00:02,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8917da92b/a26ace90042446d18bc73afd323e824d [2021-12-18 04:00:02,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 04:00:02,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 04:00:02,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 04:00:02,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 04:00:02,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 04:00:02,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:00:02" (1/1) ... [2021-12-18 04:00:02,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55812345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:02, skipping insertion in model container [2021-12-18 04:00:02,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:00:02" (1/1) ... [2021-12-18 04:00:02,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 04:00:02,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 04:00:02,927 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] [2021-12-18 04:00:03,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:00:03,436 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 04:00:03,529 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] [2021-12-18 04:00:03,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:00:03,729 INFO L208 MainTranslator]: Completed translation [2021-12-18 04:00:03,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03 WrapperNode [2021-12-18 04:00:03,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 04:00:03,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 04:00:03,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 04:00:03,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 04:00:03,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:03,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:03,914 INFO L137 Inliner]: procedures = 220, calls = 1799, calls flagged for inlining = 81, calls inlined = 72, statements flattened = 3206 [2021-12-18 04:00:03,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 04:00:03,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 04:00:03,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 04:00:03,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 04:00:03,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:03,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:03,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:03,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:04,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:04,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:04,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:04,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 04:00:04,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 04:00:04,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 04:00:04,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 04:00:04,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (1/1) ... [2021-12-18 04:00:04,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:00:04,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:00:04,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 04:00:04,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 04:00:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure nla_get_u32 [2021-12-18 04:00:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_get_u32 [2021-12-18 04:00:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_xmit [2021-12-18 04:00:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_xmit [2021-12-18 04:00:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 04:00:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 04:00:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 04:00:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 04:00:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put_u32 [2021-12-18 04:00:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put_u32 [2021-12-18 04:00:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_start_tx [2021-12-18 04:00:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_start_tx [2021-12-18 04:00:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 04:00:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 04:00:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-18 04:00:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-18 04:00:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2021-12-18 04:00:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2021-12-18 04:00:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-18 04:00:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-18 04:00:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-18 04:00:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-18 04:00:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-12-18 04:00:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-12-18 04:00:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 04:00:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 04:00:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-12-18 04:00:04,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-12-18 04:00:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 04:00:04,161 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 04:00:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-18 04:00:04,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-18 04:00:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 04:00:04,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 04:00:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 04:00:04,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 04:00:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 04:00:04,162 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 04:00:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_fill_info [2021-12-18 04:00:04,162 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_fill_info [2021-12-18 04:00:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 04:00:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 04:00:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 04:00:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc [2021-12-18 04:00:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc [2021-12-18 04:00:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_update_aggregation_stats [2021-12-18 04:00:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_update_aggregation_stats [2021-12-18 04:00:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 04:00:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-18 04:00:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-18 04:00:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 04:00:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_frm [2021-12-18 04:00:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_frm [2021-12-18 04:00:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 04:00:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 04:00:04,165 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 04:00:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_dequeue [2021-12-18 04:00:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_dequeue [2021-12-18 04:00:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 04:00:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 04:00:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-18 04:00:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-18 04:00:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-18 04:00:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-18 04:00:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc_len [2021-12-18 04:00:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc_len [2021-12-18 04:00:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 04:00:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 04:00:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 04:00:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_queue_len [2021-12-18 04:00:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_queue_len [2021-12-18 04:00:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 04:00:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 04:00:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 04:00:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-18 04:00:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-18 04:00:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 04:00:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_21 [2021-12-18 04:00:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_21 [2021-12-18 04:00:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-18 04:00:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-18 04:00:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 04:00:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 04:00:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-18 04:00:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-18 04:00:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 04:00:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 04:00:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_get_size [2021-12-18 04:00:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_get_size [2021-12-18 04:00:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_netlink_parms [2021-12-18 04:00:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_netlink_parms [2021-12-18 04:00:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-12-18 04:00:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-12-18 04:00:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 04:00:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 04:00:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 04:00:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 04:00:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 04:00:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 04:00:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-18 04:00:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-18 04:00:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-18 04:00:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-18 04:00:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-12-18 04:00:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-12-18 04:00:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 04:00:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-18 04:00:04,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-18 04:00:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_changelink [2021-12-18 04:00:04,174 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_changelink [2021-12-18 04:00:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 04:00:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 04:00:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-18 04:00:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-18 04:00:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-18 04:00:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-18 04:00:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-12-18 04:00:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-12-18 04:00:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2021-12-18 04:00:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2021-12-18 04:00:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_done [2021-12-18 04:00:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_done [2021-12-18 04:00:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-18 04:00:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-18 04:00:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2021-12-18 04:00:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2021-12-18 04:00:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-18 04:00:04,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-18 04:00:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_can_send_aggregate [2021-12-18 04:00:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_can_send_aggregate [2021-12-18 04:00:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 04:00:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 04:00:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-18 04:00:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-18 04:00:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 04:00:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 04:00:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-18 04:00:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-18 04:00:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-18 04:00:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-18 04:00:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 04:00:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 04:00:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_newlink [2021-12-18 04:00:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_newlink [2021-12-18 04:00:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-18 04:00:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-18 04:00:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 04:00:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-12-18 04:00:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-12-18 04:00:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2021-12-18 04:00:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2021-12-18 04:00:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-18 04:00:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-18 04:00:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_abort_tx [2021-12-18 04:00:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_abort_tx [2021-12-18 04:00:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-18 04:00:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-18 04:00:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 04:00:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 04:00:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-18 04:00:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-18 04:00:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-18 04:00:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-18 04:00:04,700 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 04:00:04,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 04:00:05,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 04:00:06,604 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 04:00:06,625 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 04:00:06,625 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-18 04:00:06,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:00:06 BoogieIcfgContainer [2021-12-18 04:00:06,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 04:00:06,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 04:00:06,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 04:00:06,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 04:00:06,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:00:02" (1/3) ... [2021-12-18 04:00:06,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f44f86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:00:06, skipping insertion in model container [2021-12-18 04:00:06,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:00:03" (2/3) ... [2021-12-18 04:00:06,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f44f86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:00:06, skipping insertion in model container [2021-12-18 04:00:06,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:00:06" (3/3) ... [2021-12-18 04:00:06,638 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 [2021-12-18 04:00:06,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 04:00:06,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 04:00:06,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 04:00:06,680 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 04:00:06,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 04:00:06,718 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) [2021-12-18 04:00:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-18 04:00:06,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:06,731 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] [2021-12-18 04:00:06,732 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1207697296, now seen corresponding path program 1 times [2021-12-18 04:00:06,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:06,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595259235] [2021-12-18 04:00:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:06,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:07,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:07,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 04:00:07,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:07,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595259235] [2021-12-18 04:00:07,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595259235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:07,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:07,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:00:07,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317407587] [2021-12-18 04:00:07,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:07,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:00:07,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:00:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:00:07,188 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) [2021-12-18 04:00:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:10,639 INFO L93 Difference]: Finished difference Result 3524 states and 5199 transitions. [2021-12-18 04:00:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 04:00:10,642 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 [2021-12-18 04:00:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:10,663 INFO L225 Difference]: With dead ends: 3524 [2021-12-18 04:00:10,664 INFO L226 Difference]: Without dead ends: 2417 [2021-12-18 04:00:10,684 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 [2021-12-18 04:00:10,689 INFO L933 BasicCegarLoop]: 1795 mSDtfsCounter, 2066 mSDsluCounter, 5374 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 7169 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:10,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2259 Valid, 7169 Invalid, 2575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [751 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-18 04:00:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-12-18 04:00:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2213. [2021-12-18 04:00:10,855 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) [2021-12-18 04:00:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3140 transitions. [2021-12-18 04:00:10,873 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3140 transitions. Word has length 39 [2021-12-18 04:00:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:10,898 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 3140 transitions. [2021-12-18 04:00:10,898 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) [2021-12-18 04:00:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3140 transitions. [2021-12-18 04:00:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-18 04:00:10,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:10,912 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] [2021-12-18 04:00:10,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 04:00:10,913 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1372830722, now seen corresponding path program 1 times [2021-12-18 04:00:10,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:10,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830598578] [2021-12-18 04:00:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:10,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 04:00:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 04:00:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 04:00:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-18 04:00:11,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:11,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830598578] [2021-12-18 04:00:11,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830598578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:11,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:11,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 04:00:11,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615947560] [2021-12-18 04:00:11,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:11,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 04:00:11,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 04:00:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:00:11,446 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) [2021-12-18 04:00:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:17,035 INFO L93 Difference]: Finished difference Result 4788 states and 7042 transitions. [2021-12-18 04:00:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 04:00:17,036 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 [2021-12-18 04:00:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:17,053 INFO L225 Difference]: With dead ends: 4788 [2021-12-18 04:00:17,053 INFO L226 Difference]: Without dead ends: 2585 [2021-12-18 04:00:17,064 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 [2021-12-18 04:00:17,065 INFO L933 BasicCegarLoop]: 1469 mSDtfsCounter, 481 mSDsluCounter, 9975 mSDsCounter, 0 mSdLazyCounter, 3825 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 11444 SdHoareTripleChecker+Invalid, 4170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 3825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:17,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 11444 Invalid, 4170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 3825 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-18 04:00:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2021-12-18 04:00:17,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2241. [2021-12-18 04:00:17,146 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) [2021-12-18 04:00:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 3189 transitions. [2021-12-18 04:00:17,184 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 3189 transitions. Word has length 126 [2021-12-18 04:00:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:17,184 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 3189 transitions. [2021-12-18 04:00:17,184 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) [2021-12-18 04:00:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 3189 transitions. [2021-12-18 04:00:17,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-18 04:00:17,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:17,193 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, 1] [2021-12-18 04:00:17,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 04:00:17,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash 828082038, now seen corresponding path program 1 times [2021-12-18 04:00:17,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:17,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071530506] [2021-12-18 04:00:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:17,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:00:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 04:00:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:00:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 04:00:17,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:17,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071530506] [2021-12-18 04:00:17,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071530506] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:00:17,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627214095] [2021-12-18 04:00:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:17,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:00:17,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:00:17,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:00:17,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 04:00:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:18,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 04:00:18,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:00:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-18 04:00:18,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:00:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 04:00:18,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627214095] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:00:18,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:00:18,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2021-12-18 04:00:18,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612580996] [2021-12-18 04:00:18,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:00:18,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:00:18,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:00:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:00:18,607 INFO L87 Difference]: Start difference. First operand 2241 states and 3189 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 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) [2021-12-18 04:00:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:21,926 INFO L93 Difference]: Finished difference Result 4892 states and 7224 transitions. [2021-12-18 04:00:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 04:00:21,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 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 127 [2021-12-18 04:00:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:21,943 INFO L225 Difference]: With dead ends: 4892 [2021-12-18 04:00:21,943 INFO L226 Difference]: Without dead ends: 2661 [2021-12-18 04:00:21,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:00:21,954 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 511 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:21,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 5180 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-18 04:00:21,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2021-12-18 04:00:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2313. [2021-12-18 04:00:22,045 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) [2021-12-18 04:00:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3294 transitions. [2021-12-18 04:00:22,053 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3294 transitions. Word has length 127 [2021-12-18 04:00:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:22,055 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3294 transitions. [2021-12-18 04:00:22,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 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) [2021-12-18 04:00:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3294 transitions. [2021-12-18 04:00:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-18 04:00:22,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:22,065 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] [2021-12-18 04:00:22,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 04:00:22,286 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 [2021-12-18 04:00:22,286 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:22,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1635970812, now seen corresponding path program 1 times [2021-12-18 04:00:22,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:22,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142273916] [2021-12-18 04:00:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:22,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:00:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:00:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:00:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 04:00:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 04:00:22,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:22,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142273916] [2021-12-18 04:00:22,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142273916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:22,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:22,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 04:00:22,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216905983] [2021-12-18 04:00:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:22,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 04:00:22,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 04:00:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:00:22,594 INFO L87 Difference]: Start difference. First operand 2313 states and 3294 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-12-18 04:00:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:25,142 INFO L93 Difference]: Finished difference Result 4962 states and 7246 transitions. [2021-12-18 04:00:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 04:00:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 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 136 [2021-12-18 04:00:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:25,157 INFO L225 Difference]: With dead ends: 4962 [2021-12-18 04:00:25,158 INFO L226 Difference]: Without dead ends: 2659 [2021-12-18 04:00:25,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:00:25,168 INFO L933 BasicCegarLoop]: 1513 mSDtfsCounter, 788 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 6070 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:25,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 6070 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-18 04:00:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-12-18 04:00:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2321. [2021-12-18 04:00:25,239 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) [2021-12-18 04:00:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3307 transitions. [2021-12-18 04:00:25,246 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3307 transitions. Word has length 136 [2021-12-18 04:00:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:25,248 INFO L470 AbstractCegarLoop]: Abstraction has 2321 states and 3307 transitions. [2021-12-18 04:00:25,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-12-18 04:00:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3307 transitions. [2021-12-18 04:00:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-18 04:00:25,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:25,254 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] [2021-12-18 04:00:25,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 04:00:25,254 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:25,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1662680216, now seen corresponding path program 1 times [2021-12-18 04:00:25,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:25,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425035577] [2021-12-18 04:00:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:25,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:00:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:00:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:00:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 04:00:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:00:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 04:00:25,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:25,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425035577] [2021-12-18 04:00:25,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425035577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:25,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:25,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:00:25,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134470547] [2021-12-18 04:00:25,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:25,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:00:25,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:00:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:00:25,506 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) [2021-12-18 04:00:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:27,417 INFO L93 Difference]: Finished difference Result 4962 states and 7240 transitions. [2021-12-18 04:00:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 04:00:27,417 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 [2021-12-18 04:00:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:27,428 INFO L225 Difference]: With dead ends: 4962 [2021-12-18 04:00:27,429 INFO L226 Difference]: Without dead ends: 2651 [2021-12-18 04:00:27,439 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 [2021-12-18 04:00:27,439 INFO L933 BasicCegarLoop]: 1493 mSDtfsCounter, 1117 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 982 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 3447 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 982 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:27,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 3447 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [982 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-18 04:00:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-12-18 04:00:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2323. [2021-12-18 04:00:27,507 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) [2021-12-18 04:00:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3309 transitions. [2021-12-18 04:00:27,516 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3309 transitions. Word has length 141 [2021-12-18 04:00:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:27,517 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 3309 transitions. [2021-12-18 04:00:27,517 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) [2021-12-18 04:00:27,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3309 transitions. [2021-12-18 04:00:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-18 04:00:27,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:27,523 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] [2021-12-18 04:00:27,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 04:00:27,524 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:27,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1313911595, now seen corresponding path program 1 times [2021-12-18 04:00:27,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:27,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784476189] [2021-12-18 04:00:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:27,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:00:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:00:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:00:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:00:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:00:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 04:00:27,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:27,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784476189] [2021-12-18 04:00:27,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784476189] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:00:27,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670439931] [2021-12-18 04:00:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:27,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:00:27,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:00:27,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:00:27,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 04:00:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:28,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 04:00:28,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:00:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-18 04:00:28,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:00:28,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670439931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:28,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:00:28,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-18 04:00:28,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861094882] [2021-12-18 04:00:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:28,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 04:00:28,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 04:00:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:00:28,510 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) [2021-12-18 04:00:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:28,586 INFO L93 Difference]: Finished difference Result 4686 states and 6733 transitions. [2021-12-18 04:00:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 04:00:28,587 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 [2021-12-18 04:00:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:28,598 INFO L225 Difference]: With dead ends: 4686 [2021-12-18 04:00:28,598 INFO L226 Difference]: Without dead ends: 2373 [2021-12-18 04:00:28,607 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 [2021-12-18 04:00:28,608 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 [2021-12-18 04:00:28,608 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] [2021-12-18 04:00:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2021-12-18 04:00:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2325. [2021-12-18 04:00:28,669 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) [2021-12-18 04:00:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3311 transitions. [2021-12-18 04:00:28,677 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3311 transitions. Word has length 144 [2021-12-18 04:00:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:28,677 INFO L470 AbstractCegarLoop]: Abstraction has 2325 states and 3311 transitions. [2021-12-18 04:00:28,678 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) [2021-12-18 04:00:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3311 transitions. [2021-12-18 04:00:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-18 04:00:28,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:28,684 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] [2021-12-18 04:00:28,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 04:00:28,905 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 [2021-12-18 04:00:28,906 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1432107075, now seen corresponding path program 1 times [2021-12-18 04:00:28,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:28,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998027493] [2021-12-18 04:00:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:28,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:00:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:00:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 04:00:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:00:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:00:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 04:00:29,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:29,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998027493] [2021-12-18 04:00:29,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998027493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:29,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:29,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:00:29,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69291691] [2021-12-18 04:00:29,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:29,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:00:29,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:00:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:00:29,256 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) [2021-12-18 04:00:31,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:31,176 INFO L93 Difference]: Finished difference Result 5004 states and 7316 transitions. [2021-12-18 04:00:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:00:31,177 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 [2021-12-18 04:00:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:31,189 INFO L225 Difference]: With dead ends: 5004 [2021-12-18 04:00:31,190 INFO L226 Difference]: Without dead ends: 2689 [2021-12-18 04:00:31,197 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 [2021-12-18 04:00:31,198 INFO L933 BasicCegarLoop]: 1492 mSDtfsCounter, 812 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:31,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 3410 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-18 04:00:31,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-12-18 04:00:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2337. [2021-12-18 04:00:31,263 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) [2021-12-18 04:00:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3331 transitions. [2021-12-18 04:00:31,271 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3331 transitions. Word has length 147 [2021-12-18 04:00:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:31,271 INFO L470 AbstractCegarLoop]: Abstraction has 2337 states and 3331 transitions. [2021-12-18 04:00:31,271 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) [2021-12-18 04:00:31,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3331 transitions. [2021-12-18 04:00:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 04:00:31,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:31,278 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] [2021-12-18 04:00:31,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 04:00:31,278 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1266616076, now seen corresponding path program 1 times [2021-12-18 04:00:31,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:31,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762954924] [2021-12-18 04:00:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:31,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 04:00:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 04:00:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:00:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:00:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 04:00:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:00:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 04:00:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:00:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 04:00:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 04:00:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:00:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-18 04:00:31,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:31,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762954924] [2021-12-18 04:00:31,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762954924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:31,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:31,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 04:00:31,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665646310] [2021-12-18 04:00:31,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:31,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 04:00:31,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:31,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 04:00:31,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-18 04:00:31,495 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) [2021-12-18 04:00:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:35,050 INFO L93 Difference]: Finished difference Result 6721 states and 9680 transitions. [2021-12-18 04:00:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 04:00:35,051 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 [2021-12-18 04:00:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:35,077 INFO L225 Difference]: With dead ends: 6721 [2021-12-18 04:00:35,077 INFO L226 Difference]: Without dead ends: 4394 [2021-12-18 04:00:35,084 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 [2021-12-18 04:00:35,085 INFO L933 BasicCegarLoop]: 1612 mSDtfsCounter, 2725 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 1568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2886 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1568 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:35,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2886 Valid, 4162 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1568 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-18 04:00:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2021-12-18 04:00:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3830. [2021-12-18 04:00:35,197 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) [2021-12-18 04:00:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 5425 transitions. [2021-12-18 04:00:35,209 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 5425 transitions. Word has length 162 [2021-12-18 04:00:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:35,209 INFO L470 AbstractCegarLoop]: Abstraction has 3830 states and 5425 transitions. [2021-12-18 04:00:35,210 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) [2021-12-18 04:00:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 5425 transitions. [2021-12-18 04:00:35,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-18 04:00:35,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:35,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:00:35,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 04:00:35,218 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:35,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1013186198, now seen corresponding path program 1 times [2021-12-18 04:00:35,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:35,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253772837] [2021-12-18 04:00:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:35,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 04:00:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:00:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 04:00:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 04:00:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 04:00:35,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253772837] [2021-12-18 04:00:35,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253772837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:35,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:35,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:00:35,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485231516] [2021-12-18 04:00:35,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:35,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:00:35,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:00:35,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:00:35,485 INFO L87 Difference]: Start difference. First operand 3830 states and 5425 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 04:00:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:38,241 INFO L93 Difference]: Finished difference Result 8092 states and 11694 transitions. [2021-12-18 04:00:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 04:00:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 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 149 [2021-12-18 04:00:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:38,258 INFO L225 Difference]: With dead ends: 8092 [2021-12-18 04:00:38,258 INFO L226 Difference]: Without dead ends: 4272 [2021-12-18 04:00:38,268 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 [2021-12-18 04:00:38,268 INFO L933 BasicCegarLoop]: 1488 mSDtfsCounter, 471 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:38,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 3873 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-18 04:00:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2021-12-18 04:00:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3846. [2021-12-18 04:00:38,387 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) [2021-12-18 04:00:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 5441 transitions. [2021-12-18 04:00:38,399 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 5441 transitions. Word has length 149 [2021-12-18 04:00:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:38,400 INFO L470 AbstractCegarLoop]: Abstraction has 3846 states and 5441 transitions. [2021-12-18 04:00:38,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 04:00:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 5441 transitions. [2021-12-18 04:00:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-18 04:00:38,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:38,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:00:38,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 04:00:38,408 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:38,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1408103459, now seen corresponding path program 1 times [2021-12-18 04:00:38,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:38,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159592445] [2021-12-18 04:00:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:38,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:00:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:00:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:00:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:00:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:00:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:00:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 04:00:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 04:00:38,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:38,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159592445] [2021-12-18 04:00:38,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159592445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:00:38,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616074690] [2021-12-18 04:00:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:38,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:00:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:00:38,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:00:38,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 04:00:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:39,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 04:00:39,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:00:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-18 04:00:39,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:00:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 04:00:39,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616074690] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:00:39,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:00:39,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-12-18 04:00:39,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035054275] [2021-12-18 04:00:39,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:00:39,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 04:00:39,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 04:00:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:00:39,732 INFO L87 Difference]: Start difference. First operand 3846 states and 5441 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 6 states have internal predecessors, (128), 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) [2021-12-18 04:00:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:43,820 INFO L93 Difference]: Finished difference Result 8264 states and 11914 transitions. [2021-12-18 04:00:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 04:00:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 6 states have internal predecessors, (128), 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 156 [2021-12-18 04:00:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:43,921 INFO L225 Difference]: With dead ends: 8264 [2021-12-18 04:00:43,921 INFO L226 Difference]: Without dead ends: 4428 [2021-12-18 04:00:43,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:00:43,929 INFO L933 BasicCegarLoop]: 1467 mSDtfsCounter, 813 mSDsluCounter, 5376 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 6843 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:43,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 6843 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-18 04:00:43,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-12-18 04:00:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 3882. [2021-12-18 04:00:44,029 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) [2021-12-18 04:00:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5477 transitions. [2021-12-18 04:00:44,042 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5477 transitions. Word has length 156 [2021-12-18 04:00:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:44,044 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5477 transitions. [2021-12-18 04:00:44,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 6 states have internal predecessors, (128), 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) [2021-12-18 04:00:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5477 transitions. [2021-12-18 04:00:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-18 04:00:44,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:44,052 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2021-12-18 04:00:44,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 04:00:44,273 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 [2021-12-18 04:00:44,273 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash 914777040, now seen corresponding path program 1 times [2021-12-18 04:00:44,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:44,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500282] [2021-12-18 04:00:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:44,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:00:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:00:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:00:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:00:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:00:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:00:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:00:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:00:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:00:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-18 04:00:44,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:44,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500282] [2021-12-18 04:00:44,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:44,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:44,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 04:00:44,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527765075] [2021-12-18 04:00:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:44,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 04:00:44,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 04:00:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:00:44,586 INFO L87 Difference]: Start difference. First operand 3882 states and 5477 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-18 04:00:50,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:50,676 INFO L93 Difference]: Finished difference Result 13272 states and 19349 transitions. [2021-12-18 04:00:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 04:00:50,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 169 [2021-12-18 04:00:50,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:50,719 INFO L225 Difference]: With dead ends: 13272 [2021-12-18 04:00:50,719 INFO L226 Difference]: Without dead ends: 9400 [2021-12-18 04:00:50,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:00:50,735 INFO L933 BasicCegarLoop]: 2127 mSDtfsCounter, 3896 mSDsluCounter, 4366 mSDsCounter, 0 mSdLazyCounter, 3852 mSolverCounterSat, 2669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 6493 SdHoareTripleChecker+Invalid, 6521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2669 IncrementalHoareTripleChecker+Valid, 3852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:50,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4139 Valid, 6493 Invalid, 6521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2669 Valid, 3852 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-18 04:00:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2021-12-18 04:00:51,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 7988. [2021-12-18 04:00:51,044 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) [2021-12-18 04:00:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 11480 transitions. [2021-12-18 04:00:51,073 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 11480 transitions. Word has length 169 [2021-12-18 04:00:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:51,073 INFO L470 AbstractCegarLoop]: Abstraction has 7988 states and 11480 transitions. [2021-12-18 04:00:51,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-18 04:00:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 11480 transitions. [2021-12-18 04:00:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-18 04:00:51,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:51,120 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] [2021-12-18 04:00:51,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 04:00:51,121 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:51,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:51,122 INFO L85 PathProgramCache]: Analyzing trace with hash -468912909, now seen corresponding path program 1 times [2021-12-18 04:00:51,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:51,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331751183] [2021-12-18 04:00:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:51,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:00:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 04:00:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:00:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:00:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:00:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:00:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 04:00:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:00:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:00:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-18 04:00:51,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331751183] [2021-12-18 04:00:51,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331751183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:51,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:51,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 04:00:51,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494619050] [2021-12-18 04:00:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:51,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:00:51,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:00:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:00:51,400 INFO L87 Difference]: Start difference. First operand 7988 states and 11480 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 04:00:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:57,310 INFO L93 Difference]: Finished difference Result 17106 states and 24934 transitions. [2021-12-18 04:00:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:00:57,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 188 [2021-12-18 04:00:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:57,348 INFO L225 Difference]: With dead ends: 17106 [2021-12-18 04:00:57,348 INFO L226 Difference]: Without dead ends: 9128 [2021-12-18 04:00:57,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-18 04:00:57,371 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 540 mSDsluCounter, 4740 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:57,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 6251 Invalid, 4333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-18 04:00:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9128 states. [2021-12-18 04:00:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9128 to 8092. [2021-12-18 04:00:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8092 states, 5881 states have (on average 1.30862098282605) internal successors, (7696), 5969 states have internal predecessors, (7696), 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) [2021-12-18 04:00:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8092 states to 8092 states and 11648 transitions. [2021-12-18 04:00:57,701 INFO L78 Accepts]: Start accepts. Automaton has 8092 states and 11648 transitions. Word has length 188 [2021-12-18 04:00:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:57,701 INFO L470 AbstractCegarLoop]: Abstraction has 8092 states and 11648 transitions. [2021-12-18 04:00:57,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 04:00:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 8092 states and 11648 transitions. [2021-12-18 04:00:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-18 04:00:57,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:57,717 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] [2021-12-18 04:00:57,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 04:00:57,717 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash 442906612, now seen corresponding path program 1 times [2021-12-18 04:00:57,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:57,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602035404] [2021-12-18 04:00:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:57,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:00:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:00:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:00:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:00:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:00:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:00:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:00:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:00:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:00:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:00:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:00:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:00:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 04:00:58,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:58,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602035404] [2021-12-18 04:00:58,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602035404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:58,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:58,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 04:00:58,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724154876] [2021-12-18 04:00:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:58,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 04:00:58,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 04:00:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-18 04:00:58,165 INFO L87 Difference]: Start difference. First operand 8092 states and 11648 transitions. Second operand has 18 states, 17 states have (on average 7.0) internal successors, (119), 11 states have internal predecessors, (119), 4 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) [2021-12-18 04:01:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:08,433 INFO L93 Difference]: Finished difference Result 16870 states and 24940 transitions. [2021-12-18 04:01:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-18 04:01:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.0) internal successors, (119), 11 states have internal predecessors, (119), 4 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 175 [2021-12-18 04:01:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:08,479 INFO L225 Difference]: With dead ends: 16870 [2021-12-18 04:01:08,479 INFO L226 Difference]: Without dead ends: 8788 [2021-12-18 04:01:08,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=1362, Unknown=0, NotChecked=0, Total=1560 [2021-12-18 04:01:08,513 INFO L933 BasicCegarLoop]: 2055 mSDtfsCounter, 3688 mSDsluCounter, 19594 mSDsCounter, 0 mSdLazyCounter, 11597 mSolverCounterSat, 2535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3909 SdHoareTripleChecker+Valid, 21649 SdHoareTripleChecker+Invalid, 14132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2535 IncrementalHoareTripleChecker+Valid, 11597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:08,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3909 Valid, 21649 Invalid, 14132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2535 Valid, 11597 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-12-18 04:01:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8788 states. [2021-12-18 04:01:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8788 to 8098. [2021-12-18 04:01:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8098 states, 5889 states have (on average 1.3068432671081678) internal successors, (7696), 5969 states have internal predecessors, (7696), 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) [2021-12-18 04:01:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8098 states to 8098 states and 11632 transitions. [2021-12-18 04:01:08,858 INFO L78 Accepts]: Start accepts. Automaton has 8098 states and 11632 transitions. Word has length 175 [2021-12-18 04:01:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:08,858 INFO L470 AbstractCegarLoop]: Abstraction has 8098 states and 11632 transitions. [2021-12-18 04:01:08,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.0) internal successors, (119), 11 states have internal predecessors, (119), 4 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) [2021-12-18 04:01:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 8098 states and 11632 transitions. [2021-12-18 04:01:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-18 04:01:08,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:08,875 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] [2021-12-18 04:01:08,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 04:01:08,875 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:08,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:08,876 INFO L85 PathProgramCache]: Analyzing trace with hash -188326677, now seen corresponding path program 1 times [2021-12-18 04:01:08,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:08,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981667571] [2021-12-18 04:01:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:08,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:01:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:01:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:01:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 04:01:09,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:09,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981667571] [2021-12-18 04:01:09,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981667571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:09,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:09,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 04:01:09,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459174845] [2021-12-18 04:01:09,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:09,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 04:01:09,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 04:01:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:01:09,389 INFO L87 Difference]: Start difference. First operand 8098 states and 11632 transitions. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 8 states have internal predecessors, (114), 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) [2021-12-18 04:01:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:18,949 INFO L93 Difference]: Finished difference Result 16876 states and 24558 transitions. [2021-12-18 04:01:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 04:01:18,949 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 8 states have internal predecessors, (114), 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 168 [2021-12-18 04:01:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:19,000 INFO L225 Difference]: With dead ends: 16876 [2021-12-18 04:01:19,001 INFO L226 Difference]: Without dead ends: 8788 [2021-12-18 04:01:19,026 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 [2021-12-18 04:01:19,027 INFO L933 BasicCegarLoop]: 2041 mSDtfsCounter, 3092 mSDsluCounter, 15272 mSDsCounter, 0 mSdLazyCounter, 9706 mSolverCounterSat, 1917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3311 SdHoareTripleChecker+Valid, 17313 SdHoareTripleChecker+Invalid, 11623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1917 IncrementalHoareTripleChecker+Valid, 9706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:19,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3311 Valid, 17313 Invalid, 11623 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1917 Valid, 9706 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-12-18 04:01:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8788 states. [2021-12-18 04:01:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8788 to 8106. [2021-12-18 04:01:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8106 states, 5889 states have (on average 1.3061640346408558) internal successors, (7692), 5981 states have internal predecessors, (7692), 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) [2021-12-18 04:01:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 11686 transitions. [2021-12-18 04:01:19,343 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 11686 transitions. Word has length 168 [2021-12-18 04:01:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:19,345 INFO L470 AbstractCegarLoop]: Abstraction has 8106 states and 11686 transitions. [2021-12-18 04:01:19,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 8 states have internal predecessors, (114), 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) [2021-12-18 04:01:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 11686 transitions. [2021-12-18 04:01:19,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-18 04:01:19,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:19,356 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:01:19,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 04:01:19,357 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash 848719664, now seen corresponding path program 2 times [2021-12-18 04:01:19,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:19,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201727664] [2021-12-18 04:01:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:19,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:01:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:01:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:01:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:01:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 04:01:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 04:01:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 04:01:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 04:01:19,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:19,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201727664] [2021-12-18 04:01:19,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201727664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:19,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:19,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 04:01:19,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510723227] [2021-12-18 04:01:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:19,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 04:01:19,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 04:01:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:01:19,915 INFO L87 Difference]: Start difference. First operand 8106 states and 11686 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 04:01:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:24,647 INFO L93 Difference]: Finished difference Result 16956 states and 24894 transitions. [2021-12-18 04:01:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 04:01:24,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2021-12-18 04:01:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:24,684 INFO L225 Difference]: With dead ends: 16956 [2021-12-18 04:01:24,684 INFO L226 Difference]: Without dead ends: 8860 [2021-12-18 04:01:24,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:01:24,709 INFO L933 BasicCegarLoop]: 1447 mSDtfsCounter, 1532 mSDsluCounter, 5966 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 1334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 7413 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1334 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:24,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 7413 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1334 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-18 04:01:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2021-12-18 04:01:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8146. [2021-12-18 04:01:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8146 states, 5921 states have (on average 1.3045093734166526) internal successors, (7724), 6013 states have internal predecessors, (7724), 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) [2021-12-18 04:01:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8146 states to 8146 states and 11760 transitions. [2021-12-18 04:01:25,049 INFO L78 Accepts]: Start accepts. Automaton has 8146 states and 11760 transitions. Word has length 165 [2021-12-18 04:01:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:25,050 INFO L470 AbstractCegarLoop]: Abstraction has 8146 states and 11760 transitions. [2021-12-18 04:01:25,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 04:01:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 8146 states and 11760 transitions. [2021-12-18 04:01:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-18 04:01:25,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:25,062 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] [2021-12-18 04:01:25,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 04:01:25,063 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash 108375639, now seen corresponding path program 1 times [2021-12-18 04:01:25,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:25,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140460160] [2021-12-18 04:01:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 04:01:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:01:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:01:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:01:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:01:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-18 04:01:25,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:25,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140460160] [2021-12-18 04:01:25,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140460160] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:25,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092386480] [2021-12-18 04:01:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:25,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:25,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:25,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:01:25,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 04:01:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:26,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 04:01:26,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:01:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 04:01:26,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:01:26,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092386480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:26,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:01:26,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-18 04:01:26,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206595542] [2021-12-18 04:01:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:26,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 04:01:26,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 04:01:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:01:26,513 INFO L87 Difference]: Start difference. First operand 8146 states and 11760 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-18 04:01:26,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:26,754 INFO L93 Difference]: Finished difference Result 16386 states and 23722 transitions. [2021-12-18 04:01:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 04:01:26,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 208 [2021-12-18 04:01:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:26,790 INFO L225 Difference]: With dead ends: 16386 [2021-12-18 04:01:26,791 INFO L226 Difference]: Without dead ends: 8250 [2021-12-18 04:01:26,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:01:26,816 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 [2021-12-18 04:01:26,817 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] [2021-12-18 04:01:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8250 states. [2021-12-18 04:01:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8250 to 8162. [2021-12-18 04:01:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 5937 states have (on average 1.303688731682668) internal successors, (7740), 6029 states have internal predecessors, (7740), 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) [2021-12-18 04:01:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 11776 transitions. [2021-12-18 04:01:27,170 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 11776 transitions. Word has length 208 [2021-12-18 04:01:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:27,170 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 11776 transitions. [2021-12-18 04:01:27,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-18 04:01:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 11776 transitions. [2021-12-18 04:01:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-18 04:01:27,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:27,181 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] [2021-12-18 04:01:27,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 04:01:27,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-18 04:01:27,396 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:27,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1391219230, now seen corresponding path program 1 times [2021-12-18 04:01:27,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:27,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659244214] [2021-12-18 04:01:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:27,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:01:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:01:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 04:01:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:01:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 04:01:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-18 04:01:27,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:27,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659244214] [2021-12-18 04:01:27,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659244214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:27,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:27,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 04:01:27,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324117644] [2021-12-18 04:01:27,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:27,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:01:27,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:01:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:01:27,718 INFO L87 Difference]: Start difference. First operand 8162 states and 11776 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 04:01:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:34,486 INFO L93 Difference]: Finished difference Result 18032 states and 26695 transitions. [2021-12-18 04:01:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 04:01:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 183 [2021-12-18 04:01:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:34,528 INFO L225 Difference]: With dead ends: 18032 [2021-12-18 04:01:34,528 INFO L226 Difference]: Without dead ends: 9880 [2021-12-18 04:01:34,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-12-18 04:01:34,553 INFO L933 BasicCegarLoop]: 2197 mSDtfsCounter, 3350 mSDsluCounter, 5572 mSDsCounter, 0 mSdLazyCounter, 5101 mSolverCounterSat, 2219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3633 SdHoareTripleChecker+Valid, 7769 SdHoareTripleChecker+Invalid, 7320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2219 IncrementalHoareTripleChecker+Valid, 5101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:34,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3633 Valid, 7769 Invalid, 7320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2219 Valid, 5101 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-12-18 04:01:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9880 states. [2021-12-18 04:01:34,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9880 to 8170. [2021-12-18 04:01:34,951 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) [2021-12-18 04:01:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8170 states to 8170 states and 11784 transitions. [2021-12-18 04:01:34,985 INFO L78 Accepts]: Start accepts. Automaton has 8170 states and 11784 transitions. Word has length 183 [2021-12-18 04:01:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:34,986 INFO L470 AbstractCegarLoop]: Abstraction has 8170 states and 11784 transitions. [2021-12-18 04:01:34,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 04:01:34,986 INFO L276 IsEmpty]: Start isEmpty. Operand 8170 states and 11784 transitions. [2021-12-18 04:01:34,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-18 04:01:34,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:35,000 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] [2021-12-18 04:01:35,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 04:01:35,000 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:35,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:35,001 INFO L85 PathProgramCache]: Analyzing trace with hash -614194036, now seen corresponding path program 1 times [2021-12-18 04:01:35,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:35,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817630435] [2021-12-18 04:01:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:35,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 04:01:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:01:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 04:01:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:01:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:01:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-18 04:01:35,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:35,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817630435] [2021-12-18 04:01:35,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817630435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:35,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:35,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 04:01:35,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537431783] [2021-12-18 04:01:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:35,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:01:35,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:35,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:01:35,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:01:35,337 INFO L87 Difference]: Start difference. First operand 8170 states and 11784 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 4 states have internal predecessors, (133), 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) [2021-12-18 04:01:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:41,019 INFO L93 Difference]: Finished difference Result 18936 states and 28202 transitions. [2021-12-18 04:01:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:01:41,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 4 states have internal predecessors, (133), 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 202 [2021-12-18 04:01:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:41,068 INFO L225 Difference]: With dead ends: 18936 [2021-12-18 04:01:41,068 INFO L226 Difference]: Without dead ends: 10776 [2021-12-18 04:01:41,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:01:41,093 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 727 mSDsluCounter, 5140 mSDsCounter, 0 mSdLazyCounter, 3911 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 6766 SdHoareTripleChecker+Invalid, 4307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 3911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:41,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 6766 Invalid, 4307 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [396 Valid, 3911 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-18 04:01:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10776 states. [2021-12-18 04:01:41,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10776 to 8266. [2021-12-18 04:01:41,375 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) [2021-12-18 04:01:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11928 transitions. [2021-12-18 04:01:41,404 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11928 transitions. Word has length 202 [2021-12-18 04:01:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:41,405 INFO L470 AbstractCegarLoop]: Abstraction has 8266 states and 11928 transitions. [2021-12-18 04:01:41,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 4 states have internal predecessors, (133), 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) [2021-12-18 04:01:41,405 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11928 transitions. [2021-12-18 04:01:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-18 04:01:41,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:41,417 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2021-12-18 04:01:41,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 04:01:41,418 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1253837989, now seen corresponding path program 1 times [2021-12-18 04:01:41,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:41,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056213335] [2021-12-18 04:01:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:41,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:01:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 04:01:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:01:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 04:01:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 04:01:41,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:41,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056213335] [2021-12-18 04:01:41,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056213335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:41,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:41,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 04:01:41,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524460074] [2021-12-18 04:01:41,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:41,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 04:01:41,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:41,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 04:01:41,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-18 04:01:41,778 INFO L87 Difference]: Start difference. First operand 8266 states and 11928 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 5 states have internal predecessors, (122), 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) [2021-12-18 04:01:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:51,972 INFO L93 Difference]: Finished difference Result 18008 states and 27180 transitions. [2021-12-18 04:01:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 04:01:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 5 states have internal predecessors, (122), 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 180 [2021-12-18 04:01:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:52,005 INFO L225 Difference]: With dead ends: 18008 [2021-12-18 04:01:52,005 INFO L226 Difference]: Without dead ends: 9752 [2021-12-18 04:01:52,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-12-18 04:01:52,029 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 3249 mSDsluCounter, 9433 mSDsCounter, 0 mSdLazyCounter, 7245 mSolverCounterSat, 2164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3530 SdHoareTripleChecker+Valid, 11629 SdHoareTripleChecker+Invalid, 9409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2164 IncrementalHoareTripleChecker+Valid, 7245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:52,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3530 Valid, 11629 Invalid, 9409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2164 Valid, 7245 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-12-18 04:01:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9752 states. [2021-12-18 04:01:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9752 to 8206. [2021-12-18 04:01:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8206 states, 5965 states have (on average 1.3002514668901928) internal successors, (7756), 6041 states have internal predecessors, (7756), 1674 states have call successors, (1674), 461 states have call predecessors, (1674), 566 states have return successors, (2324), 1799 states have call predecessors, (2324), 1673 states have call successors, (2324) [2021-12-18 04:01:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8206 states to 8206 states and 11754 transitions. [2021-12-18 04:01:52,293 INFO L78 Accepts]: Start accepts. Automaton has 8206 states and 11754 transitions. Word has length 180 [2021-12-18 04:01:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:52,294 INFO L470 AbstractCegarLoop]: Abstraction has 8206 states and 11754 transitions. [2021-12-18 04:01:52,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 5 states have internal predecessors, (122), 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) [2021-12-18 04:01:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 8206 states and 11754 transitions. [2021-12-18 04:01:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-18 04:01:52,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:52,304 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] [2021-12-18 04:01:52,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-18 04:01:52,304 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:52,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1297887688, now seen corresponding path program 1 times [2021-12-18 04:01:52,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:52,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677769125] [2021-12-18 04:01:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:52,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 04:01:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:01:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 04:01:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:01:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:01:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-18 04:01:52,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:52,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677769125] [2021-12-18 04:01:52,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677769125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:52,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:52,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 04:01:52,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523762488] [2021-12-18 04:01:52,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:52,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 04:01:52,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 04:01:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:01:52,622 INFO L87 Difference]: Start difference. First operand 8206 states and 11754 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) [2021-12-18 04:01:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:56,545 INFO L93 Difference]: Finished difference Result 18140 states and 26604 transitions. [2021-12-18 04:01:56,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 04:01:56,546 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 [2021-12-18 04:01:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:56,593 INFO L225 Difference]: With dead ends: 18140 [2021-12-18 04:01:56,594 INFO L226 Difference]: Without dead ends: 9944 [2021-12-18 04:01:56,621 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 [2021-12-18 04:01:56,622 INFO L933 BasicCegarLoop]: 1583 mSDtfsCounter, 1641 mSDsluCounter, 5390 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 1396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 6973 SdHoareTripleChecker+Invalid, 4274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:56,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1763 Valid, 6973 Invalid, 4274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-18 04:01:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9944 states. [2021-12-18 04:01:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9944 to 8246. [2021-12-18 04:01:56,929 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) [2021-12-18 04:01:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8246 states to 8246 states and 11814 transitions. [2021-12-18 04:01:56,965 INFO L78 Accepts]: Start accepts. Automaton has 8246 states and 11814 transitions. Word has length 202 [2021-12-18 04:01:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:56,965 INFO L470 AbstractCegarLoop]: Abstraction has 8246 states and 11814 transitions. [2021-12-18 04:01:56,966 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) [2021-12-18 04:01:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 8246 states and 11814 transitions. [2021-12-18 04:01:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-18 04:01:56,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:56,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:01:56,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-18 04:01:56,980 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1039217267, now seen corresponding path program 1 times [2021-12-18 04:01:56,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:56,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38437534] [2021-12-18 04:01:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:56,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:01:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 04:01:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:01:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:01:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-18 04:01:57,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:57,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38437534] [2021-12-18 04:01:57,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38437534] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:57,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794310381] [2021-12-18 04:01:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:57,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:57,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:57,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:01:57,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 04:01:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:58,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:01:58,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:01:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-18 04:01:58,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:01:58,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794310381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:58,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:01:58,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-18 04:01:58,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337712758] [2021-12-18 04:01:58,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:58,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:01:58,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:01:58,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-18 04:01:58,329 INFO L87 Difference]: Start difference. First operand 8246 states and 11814 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-18 04:01:58,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:58,654 INFO L93 Difference]: Finished difference Result 16586 states and 23830 transitions. [2021-12-18 04:01:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:01:58,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) Word has length 189 [2021-12-18 04:01:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:58,694 INFO L225 Difference]: With dead ends: 16586 [2021-12-18 04:01:58,695 INFO L226 Difference]: Without dead ends: 8350 [2021-12-18 04:01:58,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-18 04:01:58,721 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 [2021-12-18 04:01:58,721 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] [2021-12-18 04:01:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8350 states. [2021-12-18 04:01:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8350 to 8262. [2021-12-18 04:01:58,958 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) [2021-12-18 04:01:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8262 states to 8262 states and 11830 transitions. [2021-12-18 04:01:58,986 INFO L78 Accepts]: Start accepts. Automaton has 8262 states and 11830 transitions. Word has length 189 [2021-12-18 04:01:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:58,987 INFO L470 AbstractCegarLoop]: Abstraction has 8262 states and 11830 transitions. [2021-12-18 04:01:58,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-18 04:01:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8262 states and 11830 transitions. [2021-12-18 04:01:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-18 04:01:58,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:58,999 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] [2021-12-18 04:01:59,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 04:01:59,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:59,200 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1052915662, now seen corresponding path program 1 times [2021-12-18 04:01:59,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:59,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957004504] [2021-12-18 04:01:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:59,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:01:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:01:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:01:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:01:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:01:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:01:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:01:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:01:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 04:01:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 04:01:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 04:01:59,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:59,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957004504] [2021-12-18 04:01:59,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957004504] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:59,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822715636] [2021-12-18 04:01:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:59,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:59,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:59,688 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:01:59,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 04:02:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:00,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 3130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 04:02:00,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:02:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-18 04:02:00,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:02:00,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822715636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:00,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:02:00,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2021-12-18 04:02:00,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533884041] [2021-12-18 04:02:00,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:00,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 04:02:00,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 04:02:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-12-18 04:02:00,870 INFO L87 Difference]: Start difference. First operand 8262 states and 11830 transitions. Second operand has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-18 04:02:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:01,398 INFO L93 Difference]: Finished difference Result 17074 states and 24610 transitions. [2021-12-18 04:02:01,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:02:01,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 216 [2021-12-18 04:02:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:01,429 INFO L225 Difference]: With dead ends: 17074 [2021-12-18 04:02:01,429 INFO L226 Difference]: Without dead ends: 8822 [2021-12-18 04:02:01,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-12-18 04:02:01,451 INFO L933 BasicCegarLoop]: 1513 mSDtfsCounter, 122 mSDsluCounter, 7410 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 8923 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:01,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 8923 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 04:02:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2021-12-18 04:02:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 8294. [2021-12-18 04:02:01,700 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) [2021-12-18 04:02:01,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8294 states to 8294 states and 11870 transitions. [2021-12-18 04:02:01,730 INFO L78 Accepts]: Start accepts. Automaton has 8294 states and 11870 transitions. Word has length 216 [2021-12-18 04:02:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:01,731 INFO L470 AbstractCegarLoop]: Abstraction has 8294 states and 11870 transitions. [2021-12-18 04:02:01,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-18 04:02:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 8294 states and 11870 transitions. [2021-12-18 04:02:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-18 04:02:01,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:01,743 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] [2021-12-18 04:02:01,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 04:02:01,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:02:01,944 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:01,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash 624861341, now seen corresponding path program 1 times [2021-12-18 04:02:01,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:01,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597428215] [2021-12-18 04:02:01,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:01,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:02:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 04:02:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:02:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:02:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:02:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:02:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:02:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:02:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:02:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:02:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:02:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:02:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 04:02:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 04:02:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 04:02:02,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:02,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597428215] [2021-12-18 04:02:02,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597428215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:02,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:02:02,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-18 04:02:02,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120174037] [2021-12-18 04:02:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:02,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 04:02:02,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 04:02:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-12-18 04:02:02,832 INFO L87 Difference]: Start difference. First operand 8294 states and 11870 transitions. Second operand has 21 states, 20 states have (on average 6.7) internal successors, (134), 12 states have internal predecessors, (134), 4 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 04:02:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:12,283 INFO L93 Difference]: Finished difference Result 18652 states and 27436 transitions. [2021-12-18 04:02:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 04:02:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 6.7) internal successors, (134), 12 states have internal predecessors, (134), 4 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) Word has length 214 [2021-12-18 04:02:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:12,327 INFO L225 Difference]: With dead ends: 18652 [2021-12-18 04:02:12,328 INFO L226 Difference]: Without dead ends: 10368 [2021-12-18 04:02:12,356 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 [2021-12-18 04:02:12,356 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 708 mSDsluCounter, 21827 mSDsCounter, 0 mSdLazyCounter, 9668 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 23438 SdHoareTripleChecker+Invalid, 10069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 9668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:12,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 23438 Invalid, 10069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 9668 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-12-18 04:02:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-12-18 04:02:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 8330. [2021-12-18 04:02:12,650 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) [2021-12-18 04:02:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 11904 transitions. [2021-12-18 04:02:12,774 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 11904 transitions. Word has length 214 [2021-12-18 04:02:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:12,775 INFO L470 AbstractCegarLoop]: Abstraction has 8330 states and 11904 transitions. [2021-12-18 04:02:12,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 6.7) internal successors, (134), 12 states have internal predecessors, (134), 4 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 04:02:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 11904 transitions. [2021-12-18 04:02:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-18 04:02:12,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:12,786 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 04:02:12,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-18 04:02:12,786 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2033483896, now seen corresponding path program 1 times [2021-12-18 04:02:12,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:12,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168628533] [2021-12-18 04:02:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:12,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:02:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 04:02:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:02:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:02:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:02:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:02:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 04:02:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:02:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 04:02:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:02:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:02:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:02:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 04:02:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 04:02:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-18 04:02:13,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:13,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168628533] [2021-12-18 04:02:13,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168628533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:13,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:02:13,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 04:02:13,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400056481] [2021-12-18 04:02:13,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:13,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 04:02:13,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:13,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 04:02:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:02:13,132 INFO L87 Difference]: Start difference. First operand 8330 states and 11904 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, (25), 7 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 04:02:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:18,465 INFO L93 Difference]: Finished difference Result 18392 states and 26900 transitions. [2021-12-18 04:02:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 04:02:18,465 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, (25), 7 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 210 [2021-12-18 04:02:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:18,503 INFO L225 Difference]: With dead ends: 18392 [2021-12-18 04:02:18,503 INFO L226 Difference]: Without dead ends: 10072 [2021-12-18 04:02:18,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:02:18,526 INFO L933 BasicCegarLoop]: 1556 mSDtfsCounter, 1277 mSDsluCounter, 6407 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 7963 SdHoareTripleChecker+Invalid, 4885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:18,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1401 Valid, 7963 Invalid, 4885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1029 Valid, 3856 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 04:02:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2021-12-18 04:02:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 8406. [2021-12-18 04:02:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8406 states, 6121 states have (on average 1.2932527364809672) internal successors, (7916), 6189 states have internal predecessors, (7916), 1694 states have call successors, (1694), 461 states have call predecessors, (1694), 590 states have return successors, (2392), 1851 states have call predecessors, (2392), 1693 states have call successors, (2392) [2021-12-18 04:02:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8406 states to 8406 states and 12002 transitions. [2021-12-18 04:02:18,862 INFO L78 Accepts]: Start accepts. Automaton has 8406 states and 12002 transitions. Word has length 210 [2021-12-18 04:02:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:18,862 INFO L470 AbstractCegarLoop]: Abstraction has 8406 states and 12002 transitions. [2021-12-18 04:02:18,862 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, (25), 7 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 04:02:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8406 states and 12002 transitions. [2021-12-18 04:02:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-18 04:02:18,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:18,873 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 04:02:18,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-18 04:02:18,874 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1736894112, now seen corresponding path program 1 times [2021-12-18 04:02:18,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:18,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150066271] [2021-12-18 04:02:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:18,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:18,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:02:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 04:02:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:02:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:02:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:02:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:02:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 04:02:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 04:02:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 04:02:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:02:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:02:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:02:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 04:02:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 04:02:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-18 04:02:19,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:19,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150066271] [2021-12-18 04:02:19,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150066271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:19,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:02:19,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 04:02:19,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562995065] [2021-12-18 04:02:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:19,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 04:02:19,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 04:02:19,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:02:19,210 INFO L87 Difference]: Start difference. First operand 8406 states and 12002 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 04:02:23,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:23,957 INFO L93 Difference]: Finished difference Result 18432 states and 26986 transitions. [2021-12-18 04:02:23,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 04:02:23,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 214 [2021-12-18 04:02:23,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:23,994 INFO L225 Difference]: With dead ends: 18432 [2021-12-18 04:02:23,994 INFO L226 Difference]: Without dead ends: 10036 [2021-12-18 04:02:24,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:02:24,016 INFO L933 BasicCegarLoop]: 1548 mSDtfsCounter, 928 mSDsluCounter, 3805 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:24,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 5353 Invalid, 3580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-18 04:02:24,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2021-12-18 04:02:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 8414. [2021-12-18 04:02:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8414 states, 6129 states have (on average 1.2928699624734867) internal successors, (7924), 6197 states have internal predecessors, (7924), 1694 states have call successors, (1694), 461 states have call predecessors, (1694), 590 states have return successors, (2392), 1851 states have call predecessors, (2392), 1693 states have call successors, (2392) [2021-12-18 04:02:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8414 states to 8414 states and 12010 transitions. [2021-12-18 04:02:24,305 INFO L78 Accepts]: Start accepts. Automaton has 8414 states and 12010 transitions. Word has length 214 [2021-12-18 04:02:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:24,305 INFO L470 AbstractCegarLoop]: Abstraction has 8414 states and 12010 transitions. [2021-12-18 04:02:24,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 04:02:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8414 states and 12010 transitions. [2021-12-18 04:02:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-18 04:02:24,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:24,316 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 04:02:24,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-18 04:02:24,316 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:24,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:24,317 INFO L85 PathProgramCache]: Analyzing trace with hash 264992158, now seen corresponding path program 1 times [2021-12-18 04:02:24,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:24,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876529977] [2021-12-18 04:02:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:24,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:02:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 04:02:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:02:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:02:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:02:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:02:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 04:02:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 04:02:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 04:02:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:02:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:02:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:02:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 04:02:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 04:02:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-18 04:02:24,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:24,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876529977] [2021-12-18 04:02:24,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876529977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:24,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:02:24,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 04:02:24,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955077268] [2021-12-18 04:02:24,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:24,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 04:02:24,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:24,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 04:02:24,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-18 04:02:24,621 INFO L87 Difference]: Start difference. First operand 8414 states and 12010 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 04:02:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:29,135 INFO L93 Difference]: Finished difference Result 19416 states and 28594 transitions. [2021-12-18 04:02:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 04:02:29,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 214 [2021-12-18 04:02:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:29,178 INFO L225 Difference]: With dead ends: 19416 [2021-12-18 04:02:29,178 INFO L226 Difference]: Without dead ends: 10996 [2021-12-18 04:02:29,202 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 [2021-12-18 04:02:29,202 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1736 mSDsluCounter, 6986 mSDsCounter, 0 mSdLazyCounter, 3575 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 8612 SdHoareTripleChecker+Invalid, 4995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 3575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:29,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1898 Valid, 8612 Invalid, 4995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 3575 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-18 04:02:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10996 states. [2021-12-18 04:02:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10996 to 8502. [2021-12-18 04:02:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8502 states, 6209 states have (on average 1.2929618296021903) internal successors, (8028), 6277 states have internal predecessors, (8028), 1694 states have call successors, (1694), 461 states have call predecessors, (1694), 598 states have return successors, (2408), 1859 states have call predecessors, (2408), 1693 states have call successors, (2408) [2021-12-18 04:02:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8502 states to 8502 states and 12130 transitions. [2021-12-18 04:02:29,535 INFO L78 Accepts]: Start accepts. Automaton has 8502 states and 12130 transitions. Word has length 214 [2021-12-18 04:02:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:29,536 INFO L470 AbstractCegarLoop]: Abstraction has 8502 states and 12130 transitions. [2021-12-18 04:02:29,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 04:02:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 8502 states and 12130 transitions. [2021-12-18 04:02:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-18 04:02:29,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:29,550 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] [2021-12-18 04:02:29,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-18 04:02:29,551 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1534619053, now seen corresponding path program 1 times [2021-12-18 04:02:29,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:29,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396953419] [2021-12-18 04:02:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:29,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:02:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:02:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:02:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:02:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:02:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:02:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:02:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 04:02:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 04:02:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 04:02:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:02:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:02:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 04:02:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 04:02:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 04:02:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 04:02:30,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:30,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396953419] [2021-12-18 04:02:30,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396953419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:02:30,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119951980] [2021-12-18 04:02:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:30,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:02:30,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:02:30,686 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:02:30,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 04:02:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:31,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 3128 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-18 04:02:31,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:02:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 04:02:32,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:02:32,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119951980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:32,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:02:32,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [25] total 28 [2021-12-18 04:02:32,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402590849] [2021-12-18 04:02:32,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:32,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 04:02:32,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:32,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 04:02:32,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-12-18 04:02:32,223 INFO L87 Difference]: Start difference. First operand 8502 states and 12130 transitions. Second operand has 16 states, 15 states have (on average 9.6) internal successors, (144), 12 states have internal predecessors, (144), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 04:02:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:32,771 INFO L93 Difference]: Finished difference Result 17234 states and 24764 transitions. [2021-12-18 04:02:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 04:02:32,772 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.6) internal successors, (144), 12 states have internal predecessors, (144), 4 states have call successors, (26), 2 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 216 [2021-12-18 04:02:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:32,809 INFO L225 Difference]: With dead ends: 17234 [2021-12-18 04:02:32,809 INFO L226 Difference]: Without dead ends: 8742 [2021-12-18 04:02:32,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 256 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2021-12-18 04:02:32,835 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:32,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 22520 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 04:02:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8742 states. [2021-12-18 04:02:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 8526. [2021-12-18 04:02:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8526 states, 6233 states have (on average 1.2918337879030963) internal successors, (8052), 6293 states have internal predecessors, (8052), 1694 states have call successors, (1694), 461 states have call predecessors, (1694), 598 states have return successors, (2408), 1867 states have call predecessors, (2408), 1693 states have call successors, (2408) [2021-12-18 04:02:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8526 states to 8526 states and 12154 transitions. [2021-12-18 04:02:33,187 INFO L78 Accepts]: Start accepts. Automaton has 8526 states and 12154 transitions. Word has length 216 [2021-12-18 04:02:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:33,187 INFO L470 AbstractCegarLoop]: Abstraction has 8526 states and 12154 transitions. [2021-12-18 04:02:33,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.6) internal successors, (144), 12 states have internal predecessors, (144), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 04:02:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8526 states and 12154 transitions. [2021-12-18 04:02:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-18 04:02:33,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:33,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:02:33,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 04:02:33,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:02:33,400 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1320075797, now seen corresponding path program 1 times [2021-12-18 04:02:33,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:33,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648592019] [2021-12-18 04:02:33,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:33,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:02:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:02:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:02:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:02:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:02:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 04:02:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 04:02:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:02:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 04:02:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 04:02:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 04:02:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 04:02:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 04:02:33,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:33,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648592019] [2021-12-18 04:02:33,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648592019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:33,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:02:33,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 04:02:33,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043472747] [2021-12-18 04:02:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:33,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:02:33,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:33,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:02:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:02:33,721 INFO L87 Difference]: Start difference. First operand 8526 states and 12154 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 4 states have internal predecessors, (129), 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) [2021-12-18 04:02:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:38,904 INFO L93 Difference]: Finished difference Result 17776 states and 25846 transitions. [2021-12-18 04:02:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 04:02:38,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 4 states have internal predecessors, (129), 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 190 [2021-12-18 04:02:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:38,958 INFO L225 Difference]: With dead ends: 17776 [2021-12-18 04:02:38,958 INFO L226 Difference]: Without dead ends: 9244 [2021-12-18 04:02:39,080 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 [2021-12-18 04:02:39,086 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 478 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 6146 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:39,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 6146 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-18 04:02:39,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2021-12-18 04:02:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 8562. [2021-12-18 04:02:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8562 states, 6265 states have (on average 1.2916201117318435) internal successors, (8092), 6325 states have internal predecessors, (8092), 1694 states have call successors, (1694), 465 states have call predecessors, (1694), 602 states have return successors, (2396), 1867 states have call predecessors, (2396), 1693 states have call successors, (2396) [2021-12-18 04:02:39,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 12182 transitions. [2021-12-18 04:02:39,517 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 12182 transitions. Word has length 190 [2021-12-18 04:02:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:39,517 INFO L470 AbstractCegarLoop]: Abstraction has 8562 states and 12182 transitions. [2021-12-18 04:02:39,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 4 states have internal predecessors, (129), 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) [2021-12-18 04:02:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 12182 transitions. [2021-12-18 04:02:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-18 04:02:39,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:39,532 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] [2021-12-18 04:02:39,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-18 04:02:39,532 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:39,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash -179125858, now seen corresponding path program 1 times [2021-12-18 04:02:39,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:39,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035766567] [2021-12-18 04:02:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:39,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:02:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:02:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:02:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:02:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:02:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:02:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:02:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 04:02:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:02:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:02:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 04:02:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 04:02:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 04:02:39,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:39,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035766567] [2021-12-18 04:02:39,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035766567] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:02:39,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522221368] [2021-12-18 04:02:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:39,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:02:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:02:39,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:02:39,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 04:02:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:40,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-18 04:02:40,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:02:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-18 04:02:41,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:02:41,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522221368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:41,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:02:41,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-12-18 04:02:41,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978102515] [2021-12-18 04:02:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:41,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:02:41,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:41,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:02:41,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-18 04:02:41,228 INFO L87 Difference]: Start difference. First operand 8562 states and 12182 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) [2021-12-18 04:02:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:54,072 INFO L93 Difference]: Finished difference Result 33606 states and 55534 transitions. [2021-12-18 04:02:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 04:02:54,072 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 [2021-12-18 04:02:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:54,216 INFO L225 Difference]: With dead ends: 33606 [2021-12-18 04:02:54,216 INFO L226 Difference]: Without dead ends: 29155 [2021-12-18 04:02:54,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-12-18 04:02:54,249 INFO L933 BasicCegarLoop]: 2248 mSDtfsCounter, 8244 mSDsluCounter, 6305 mSDsCounter, 0 mSdLazyCounter, 12645 mSolverCounterSat, 5165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8887 SdHoareTripleChecker+Valid, 8553 SdHoareTripleChecker+Invalid, 17810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5165 IncrementalHoareTripleChecker+Valid, 12645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:54,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8887 Valid, 8553 Invalid, 17810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5165 Valid, 12645 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2021-12-18 04:02:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29155 states. [2021-12-18 04:02:55,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29155 to 28329. [2021-12-18 04:02:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28329 states, 20565 states have (on average 1.2857281789448092) internal successors, (26441), 20744 states have internal predecessors, (26441), 5977 states have call successors, (5977), 1158 states have call predecessors, (5977), 1786 states have return successors, (14174), 6802 states have call predecessors, (14174), 5976 states have call successors, (14174) [2021-12-18 04:02:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28329 states to 28329 states and 46592 transitions. [2021-12-18 04:02:55,637 INFO L78 Accepts]: Start accepts. Automaton has 28329 states and 46592 transitions. Word has length 193 [2021-12-18 04:02:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:55,638 INFO L470 AbstractCegarLoop]: Abstraction has 28329 states and 46592 transitions. [2021-12-18 04:02:55,638 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) [2021-12-18 04:02:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 28329 states and 46592 transitions. [2021-12-18 04:02:55,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-18 04:02:55,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:55,661 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] [2021-12-18 04:02:55,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 04:02:55,885 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 [2021-12-18 04:02:55,886 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1857275359, now seen corresponding path program 1 times [2021-12-18 04:02:55,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:55,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667308865] [2021-12-18 04:02:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:55,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:55,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:02:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:02:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:02:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:02:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:02:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:02:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:02:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 04:02:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 04:02:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:02:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 04:02:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 04:02:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 04:02:56,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:56,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667308865] [2021-12-18 04:02:56,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667308865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:02:56,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:02:56,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 04:02:56,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632785317] [2021-12-18 04:02:56,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:02:56,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:02:56,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:02:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:02:56,230 INFO L87 Difference]: Start difference. First operand 28329 states and 46592 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) [2021-12-18 04:03:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:03:01,887 INFO L93 Difference]: Finished difference Result 58493 states and 104016 transitions. [2021-12-18 04:03:01,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 04:03:01,887 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 [2021-12-18 04:03:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:03:02,171 INFO L225 Difference]: With dead ends: 58493 [2021-12-18 04:03:02,171 INFO L226 Difference]: Without dead ends: 30174 [2021-12-18 04:03:02,469 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 [2021-12-18 04:03:02,470 INFO L933 BasicCegarLoop]: 1466 mSDtfsCounter, 1188 mSDsluCounter, 4298 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 5764 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:03:02,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 5764 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-18 04:03:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30174 states. [2021-12-18 04:03:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30174 to 28361. [2021-12-18 04:03:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28361 states, 20593 states have (on average 1.2855339192929636) internal successors, (26473), 20776 states have internal predecessors, (26473), 5977 states have call successors, (5977), 1158 states have call predecessors, (5977), 1790 states have return successors, (14198), 6802 states have call predecessors, (14198), 5976 states have call successors, (14198) [2021-12-18 04:03:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28361 states to 28361 states and 46648 transitions. [2021-12-18 04:03:03,828 INFO L78 Accepts]: Start accepts. Automaton has 28361 states and 46648 transitions. Word has length 195 [2021-12-18 04:03:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:03:03,829 INFO L470 AbstractCegarLoop]: Abstraction has 28361 states and 46648 transitions. [2021-12-18 04:03:03,829 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) [2021-12-18 04:03:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 28361 states and 46648 transitions. [2021-12-18 04:03:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-18 04:03:03,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:03:03,849 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] [2021-12-18 04:03:03,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-18 04:03:03,850 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:03:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:03:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1092437627, now seen corresponding path program 1 times [2021-12-18 04:03:03,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:03:03,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272704465] [2021-12-18 04:03:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:03:03,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:03:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:03:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:03:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 04:03:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:03:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 04:03:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 04:03:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:03:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:03,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 04:03:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 04:03:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:03:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:03:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 04:03:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:03:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 04:03:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:03:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 04:03:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 04:03:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:03:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-18 04:03:04,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:03:04,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272704465] [2021-12-18 04:03:04,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272704465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:03:04,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:03:04,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 04:03:04,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403850711] [2021-12-18 04:03:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:03:04,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 04:03:04,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:03:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 04:03:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:03:04,152 INFO L87 Difference]: Start difference. First operand 28361 states and 46648 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) [2021-12-18 04:03:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:03:16,375 INFO L93 Difference]: Finished difference Result 72062 states and 122592 transitions. [2021-12-18 04:03:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 04:03:16,376 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 [2021-12-18 04:03:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:03:16,752 INFO L225 Difference]: With dead ends: 72062 [2021-12-18 04:03:16,752 INFO L226 Difference]: Without dead ends: 43671 [2021-12-18 04:03:16,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2021-12-18 04:03:16,912 INFO L933 BasicCegarLoop]: 2376 mSDtfsCounter, 1742 mSDsluCounter, 15535 mSDsCounter, 0 mSdLazyCounter, 7935 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 17911 SdHoareTripleChecker+Invalid, 8794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 7935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:03:16,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1875 Valid, 17911 Invalid, 8794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [859 Valid, 7935 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-12-18 04:03:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43671 states. [2021-12-18 04:03:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43671 to 39278. [2021-12-18 04:03:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39278 states, 28816 states have (on average 1.2874097723486952) internal successors, (37098), 29012 states have internal predecessors, (37098), 7960 states have call successors, (7960), 1623 states have call predecessors, (7960), 2501 states have return successors, (18330), 9110 states have call predecessors, (18330), 7959 states have call successors, (18330) [2021-12-18 04:03:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39278 states to 39278 states and 63388 transitions. [2021-12-18 04:03:19,029 INFO L78 Accepts]: Start accepts. Automaton has 39278 states and 63388 transitions. Word has length 206 [2021-12-18 04:03:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:03:19,029 INFO L470 AbstractCegarLoop]: Abstraction has 39278 states and 63388 transitions. [2021-12-18 04:03:19,029 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) [2021-12-18 04:03:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 39278 states and 63388 transitions. [2021-12-18 04:03:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-18 04:03:19,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:03:19,051 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] [2021-12-18 04:03:19,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-18 04:03:19,051 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:03:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:03:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1204035036, now seen corresponding path program 1 times [2021-12-18 04:03:19,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:03:19,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995304535] [2021-12-18 04:03:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:03:19,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:03:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:03:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:03:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:03:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:03:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:03:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:03:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:03:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:03:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:03:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:03:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 04:03:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 04:03:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 04:03:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 04:03:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 04:03:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 04:03:19,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:03:19,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995304535] [2021-12-18 04:03:19,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995304535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:03:19,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:03:19,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 04:03:19,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859329399] [2021-12-18 04:03:19,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:03:19,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 04:03:19,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:03:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 04:03:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:03:19,378 INFO L87 Difference]: Start difference. First operand 39278 states and 63388 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) [2021-12-18 04:03:26,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:03:26,134 INFO L93 Difference]: Finished difference Result 75179 states and 128419 transitions. [2021-12-18 04:03:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:03:26,135 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 [2021-12-18 04:03:26,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:03:26,464 INFO L225 Difference]: With dead ends: 75179 [2021-12-18 04:03:26,465 INFO L226 Difference]: Without dead ends: 41697 [2021-12-18 04:03:26,944 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 [2021-12-18 04:03:26,944 INFO L933 BasicCegarLoop]: 1462 mSDtfsCounter, 1156 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 1041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1041 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-18 04:03:26,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 4503 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1041 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-18 04:03:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41697 states. [2021-12-18 04:03:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41697 to 39242. [2021-12-18 04:03:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39242 states, 28786 states have (on average 1.2860418258875843) internal successors, (37020), 28976 states have internal predecessors, (37020), 7960 states have call successors, (7960), 1623 states have call predecessors, (7960), 2495 states have return successors, (17982), 9110 states have call predecessors, (17982), 7959 states have call successors, (17982) [2021-12-18 04:03:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39242 states to 39242 states and 62962 transitions. [2021-12-18 04:03:28,859 INFO L78 Accepts]: Start accepts. Automaton has 39242 states and 62962 transitions. Word has length 197 [2021-12-18 04:03:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:03:28,860 INFO L470 AbstractCegarLoop]: Abstraction has 39242 states and 62962 transitions. [2021-12-18 04:03:28,860 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) [2021-12-18 04:03:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 39242 states and 62962 transitions. [2021-12-18 04:03:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-18 04:03:28,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:03:28,883 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] [2021-12-18 04:03:28,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-18 04:03:28,884 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:03:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:03:28,884 INFO L85 PathProgramCache]: Analyzing trace with hash 383818758, now seen corresponding path program 1 times [2021-12-18 04:03:28,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:03:28,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229283683] [2021-12-18 04:03:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:03:28,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:03:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:28,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:03:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:03:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:28,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:03:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:03:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:03:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:03:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:03:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:03:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:03:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:03:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 04:03:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 04:03:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 04:03:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 04:03:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 04:03:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-18 04:03:29,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:03:29,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229283683] [2021-12-18 04:03:29,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229283683] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:03:29,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071140494] [2021-12-18 04:03:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:03:29,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:03:29,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:03:29,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:03:29,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 04:03:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:30,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 04:03:30,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:03:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-18 04:03:30,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:03:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-18 04:03:30,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071140494] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:03:30,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:03:30,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 11 [2021-12-18 04:03:30,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880808460] [2021-12-18 04:03:30,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:03:30,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 04:03:30,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:03:30,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 04:03:30,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-18 04:03:30,978 INFO L87 Difference]: Start difference. First operand 39242 states and 62962 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) [2021-12-18 04:03:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:03:38,353 INFO L93 Difference]: Finished difference Result 85441 states and 144596 transitions. [2021-12-18 04:03:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 04:03:38,354 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 [2021-12-18 04:03:38,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:03:38,643 INFO L225 Difference]: With dead ends: 85441 [2021-12-18 04:03:38,643 INFO L226 Difference]: Without dead ends: 46209 [2021-12-18 04:03:39,031 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 [2021-12-18 04:03:39,031 INFO L933 BasicCegarLoop]: 1485 mSDtfsCounter, 957 mSDsluCounter, 5440 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 6925 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:03:39,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 6925 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-18 04:03:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46209 states. [2021-12-18 04:03:41,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46209 to 43754. [2021-12-18 04:03:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43754 states, 32002 states have (on average 1.2812949190675582) internal successors, (41004), 32186 states have internal predecessors, (41004), 9256 states have call successors, (9256), 1623 states have call predecessors, (9256), 2495 states have return successors, (20374), 10412 states have call predecessors, (20374), 9255 states have call successors, (20374) [2021-12-18 04:03:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43754 states to 43754 states and 70634 transitions. [2021-12-18 04:03:41,517 INFO L78 Accepts]: Start accepts. Automaton has 43754 states and 70634 transitions. Word has length 197 [2021-12-18 04:03:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:03:41,518 INFO L470 AbstractCegarLoop]: Abstraction has 43754 states and 70634 transitions. [2021-12-18 04:03:41,518 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) [2021-12-18 04:03:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 43754 states and 70634 transitions. [2021-12-18 04:03:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-18 04:03:41,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:03:41,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:03:41,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 04:03:41,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:03:41,766 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:03:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:03:41,766 INFO L85 PathProgramCache]: Analyzing trace with hash -734505014, now seen corresponding path program 1 times [2021-12-18 04:03:41,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:03:41,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935639664] [2021-12-18 04:03:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:03:41,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:03:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:03:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:03:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:03:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:03:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:03:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:03:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:03:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 04:03:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 04:03:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 04:03:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 04:03:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 04:03:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:03:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 04:03:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 04:03:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-12-18 04:03:42,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:03:42,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935639664] [2021-12-18 04:03:42,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935639664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:03:42,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:03:42,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 04:03:42,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127765755] [2021-12-18 04:03:42,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:03:42,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 04:03:42,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:03:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 04:03:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-18 04:03:42,688 INFO L87 Difference]: Start difference. First operand 43754 states and 70634 transitions. Second operand has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 11 states have internal predecessors, (110), 3 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 04:03:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:03:51,458 INFO L93 Difference]: Finished difference Result 88861 states and 152494 transitions. [2021-12-18 04:03:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 04:03:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 11 states have internal predecessors, (110), 3 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 211 [2021-12-18 04:03:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:03:51,736 INFO L225 Difference]: With dead ends: 88861 [2021-12-18 04:03:51,736 INFO L226 Difference]: Without dead ends: 45105 [2021-12-18 04:03:52,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2021-12-18 04:03:52,110 INFO L933 BasicCegarLoop]: 1437 mSDtfsCounter, 1136 mSDsluCounter, 15745 mSDsCounter, 0 mSdLazyCounter, 6264 mSolverCounterSat, 1040 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 17182 SdHoareTripleChecker+Invalid, 7304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1040 IncrementalHoareTripleChecker+Valid, 6264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-18 04:03:52,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 17182 Invalid, 7304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1040 Valid, 6264 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-18 04:03:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45105 states. [2021-12-18 04:03:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45105 to 42682. [2021-12-18 04:03:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42682 states, 31060 states have (on average 1.2825499034127494) internal successors, (39836), 31344 states have internal predecessors, (39836), 9178 states have call successors, (9178), 1623 states have call predecessors, (9178), 2443 states have return successors, (18921), 10182 states have call predecessors, (18921), 9177 states have call successors, (18921) [2021-12-18 04:03:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42682 states to 42682 states and 67935 transitions. [2021-12-18 04:03:54,381 INFO L78 Accepts]: Start accepts. Automaton has 42682 states and 67935 transitions. Word has length 211 [2021-12-18 04:03:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:03:54,381 INFO L470 AbstractCegarLoop]: Abstraction has 42682 states and 67935 transitions. [2021-12-18 04:03:54,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 11 states have internal predecessors, (110), 3 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 04:03:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 42682 states and 67935 transitions. [2021-12-18 04:03:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-18 04:03:54,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:03:54,568 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:03:54,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-18 04:03:54,568 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:03:54,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:03:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2030834089, now seen corresponding path program 1 times [2021-12-18 04:03:54,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:03:54,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718425079] [2021-12-18 04:03:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:03:54,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:03:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:03:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:03:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:03:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:03:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:03:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:03:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:03:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:03:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:03:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:03:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:03:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:03:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:03:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 04:03:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:03:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:03:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:03:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 04:03:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 04:03:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 04:03:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 04:03:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 04:03:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:03:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:03:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 04:03:54,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:03:54,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718425079] [2021-12-18 04:03:54,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718425079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:03:54,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:03:54,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 04:03:54,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663146624] [2021-12-18 04:03:54,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:03:54,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:03:54,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:03:54,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:03:54,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:03:54,903 INFO L87 Difference]: Start difference. First operand 42682 states and 67935 transitions. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (28), 8 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 04:04:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:04:00,881 INFO L93 Difference]: Finished difference Result 87423 states and 142710 transitions. [2021-12-18 04:04:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:04:00,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (28), 8 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 239 [2021-12-18 04:04:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:04:01,202 INFO L225 Difference]: With dead ends: 87423 [2021-12-18 04:04:01,202 INFO L226 Difference]: Without dead ends: 44751 [2021-12-18 04:04:01,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:04:01,481 INFO L933 BasicCegarLoop]: 1451 mSDtfsCounter, 842 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 736 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:04:01,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 4389 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [736 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-18 04:04:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44751 states. [2021-12-18 04:04:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44751 to 42682. [2021-12-18 04:04:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42682 states, 31060 states have (on average 1.2796522858982615) internal successors, (39746), 31344 states have internal predecessors, (39746), 9178 states have call successors, (9178), 1623 states have call predecessors, (9178), 2443 states have return successors, (18921), 10182 states have call predecessors, (18921), 9177 states have call successors, (18921) [2021-12-18 04:04:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42682 states to 42682 states and 67845 transitions. [2021-12-18 04:04:04,019 INFO L78 Accepts]: Start accepts. Automaton has 42682 states and 67845 transitions. Word has length 239 [2021-12-18 04:04:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:04:04,020 INFO L470 AbstractCegarLoop]: Abstraction has 42682 states and 67845 transitions. [2021-12-18 04:04:04,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (28), 8 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 04:04:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 42682 states and 67845 transitions. [2021-12-18 04:04:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-18 04:04:04,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:04:04,048 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, 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] [2021-12-18 04:04:04,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-18 04:04:04,049 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:04:04,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:04:04,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1608683834, now seen corresponding path program 1 times [2021-12-18 04:04:04,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:04:04,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300732109] [2021-12-18 04:04:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:04:04,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:04:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:04:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:04:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:04:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:04:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:04:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:04:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:04:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:04:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:04:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:04:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 04:04:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 04:04:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 04:04:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:04:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:04:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 04:04:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:04:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:04:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 04:04:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 04:04:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 04:04:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 04:04:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-18 04:04:04,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:04:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300732109] [2021-12-18 04:04:04,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300732109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:04:04,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:04:04,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 04:04:04,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289727288] [2021-12-18 04:04:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:04:04,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 04:04:04,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:04:04,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 04:04:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:04:04,481 INFO L87 Difference]: Start difference. First operand 42682 states and 67845 transitions. Second operand has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 7 states have internal predecessors, (141), 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) [2021-12-18 04:04:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:04:18,636 INFO L93 Difference]: Finished difference Result 94101 states and 158496 transitions. [2021-12-18 04:04:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-18 04:04:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 7 states have internal predecessors, (141), 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) Word has length 235 [2021-12-18 04:04:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:04:19,013 INFO L225 Difference]: With dead ends: 94101 [2021-12-18 04:04:19,013 INFO L226 Difference]: Without dead ends: 51429 [2021-12-18 04:04:19,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2021-12-18 04:04:19,272 INFO L933 BasicCegarLoop]: 1750 mSDtfsCounter, 2194 mSDsluCounter, 13113 mSDsCounter, 0 mSdLazyCounter, 10615 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2427 SdHoareTripleChecker+Valid, 14863 SdHoareTripleChecker+Invalid, 11651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 10615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:04:19,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2427 Valid, 14863 Invalid, 11651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1036 Valid, 10615 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2021-12-18 04:04:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51429 states. [2021-12-18 04:04:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51429 to 42916. [2021-12-18 04:04:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42916 states, 31216 states have (on average 1.2782547411583802) internal successors, (39902), 31422 states have internal predecessors, (39902), 9256 states have call successors, (9256), 1623 states have call predecessors, (9256), 2443 states have return successors, (18999), 10260 states have call predecessors, (18999), 9255 states have call successors, (18999) [2021-12-18 04:04:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42916 states to 42916 states and 68157 transitions. [2021-12-18 04:04:21,693 INFO L78 Accepts]: Start accepts. Automaton has 42916 states and 68157 transitions. Word has length 235 [2021-12-18 04:04:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:04:21,693 INFO L470 AbstractCegarLoop]: Abstraction has 42916 states and 68157 transitions. [2021-12-18 04:04:21,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 7 states have internal predecessors, (141), 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) [2021-12-18 04:04:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 42916 states and 68157 transitions. [2021-12-18 04:04:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-18 04:04:21,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:04:21,717 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, 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] [2021-12-18 04:04:21,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-18 04:04:21,717 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:04:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:04:21,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1099210744, now seen corresponding path program 1 times [2021-12-18 04:04:21,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:04:21,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417439344] [2021-12-18 04:04:21,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:04:21,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:04:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:04:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:04:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:04:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:04:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:04:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:04:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:04:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 04:04:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:04:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:04:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 04:04:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 04:04:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 04:04:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:04:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:04:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 04:04:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:04:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:04:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:04:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 04:04:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 04:04:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 04:04:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 04:04:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 04:04:22,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:04:22,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417439344] [2021-12-18 04:04:22,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417439344] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:04:22,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982507754] [2021-12-18 04:04:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:04:22,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:04:22,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:04:22,140 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:04:22,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 04:04:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:04:23,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-18 04:04:23,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:04:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-18 04:04:23,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:04:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-18 04:04:24,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982507754] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:04:24,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:04:24,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 6] total 22 [2021-12-18 04:04:24,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724637306] [2021-12-18 04:04:24,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:04:24,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-18 04:04:24,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:04:24,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-18 04:04:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-12-18 04:04:24,864 INFO L87 Difference]: Start difference. First operand 42916 states and 68157 transitions. Second operand has 22 states, 22 states have (on average 11.409090909090908) internal successors, (251), 17 states have internal predecessors, (251), 10 states have call successors, (59), 9 states have call predecessors, (59), 5 states have return successors, (51), 10 states have call predecessors, (51), 10 states have call successors, (51) [2021-12-18 04:04:27,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:05:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:05:00,703 INFO L93 Difference]: Finished difference Result 146722 states and 273440 transitions. [2021-12-18 04:05:00,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-12-18 04:05:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.409090909090908) internal successors, (251), 17 states have internal predecessors, (251), 10 states have call successors, (59), 9 states have call predecessors, (59), 5 states have return successors, (51), 10 states have call predecessors, (51), 10 states have call successors, (51) Word has length 235 [2021-12-18 04:05:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:05:01,864 INFO L225 Difference]: With dead ends: 146722 [2021-12-18 04:05:01,865 INFO L226 Difference]: Without dead ends: 103816 [2021-12-18 04:05:02,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2817 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1371, Invalid=7001, Unknown=0, NotChecked=0, Total=8372 [2021-12-18 04:05:02,263 INFO L933 BasicCegarLoop]: 2633 mSDtfsCounter, 13530 mSDsluCounter, 17356 mSDsCounter, 0 mSdLazyCounter, 32211 mSolverCounterSat, 11541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14075 SdHoareTripleChecker+Valid, 19989 SdHoareTripleChecker+Invalid, 43752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11541 IncrementalHoareTripleChecker+Valid, 32211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2021-12-18 04:05:02,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14075 Valid, 19989 Invalid, 43752 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11541 Valid, 32211 Invalid, 0 Unknown, 0 Unchecked, 27.0s Time] [2021-12-18 04:05:02,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103816 states. [2021-12-18 04:05:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103816 to 93992. [2021-12-18 04:05:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93992 states, 67414 states have (on average 1.2690094045747173) internal successors, (85549), 67945 states have internal predecessors, (85549), 21858 states have call successors, (21858), 2851 states have call predecessors, (21858), 4719 states have return successors, (63547), 24089 states have call predecessors, (63547), 21857 states have call successors, (63547) [2021-12-18 04:05:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93992 states to 93992 states and 170954 transitions. [2021-12-18 04:05:09,522 INFO L78 Accepts]: Start accepts. Automaton has 93992 states and 170954 transitions. Word has length 235 [2021-12-18 04:05:09,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:05:09,522 INFO L470 AbstractCegarLoop]: Abstraction has 93992 states and 170954 transitions. [2021-12-18 04:05:09,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.409090909090908) internal successors, (251), 17 states have internal predecessors, (251), 10 states have call successors, (59), 9 states have call predecessors, (59), 5 states have return successors, (51), 10 states have call predecessors, (51), 10 states have call successors, (51) [2021-12-18 04:05:09,522 INFO L276 IsEmpty]: Start isEmpty. Operand 93992 states and 170954 transitions. [2021-12-18 04:05:09,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-18 04:05:09,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:05:09,545 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 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] [2021-12-18 04:05:09,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 04:05:09,746 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,SelfDestructingSolverStorable36 [2021-12-18 04:05:09,746 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:05:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:05:09,746 INFO L85 PathProgramCache]: Analyzing trace with hash 643126198, now seen corresponding path program 1 times [2021-12-18 04:05:09,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:05:09,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244878703] [2021-12-18 04:05:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:05:09,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:05:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:05:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:05:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:05:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 04:05:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:05:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 04:05:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 04:05:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:05:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 04:05:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:05:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 04:05:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:05:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:05:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 04:05:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:05:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 04:05:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-18 04:05:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 04:05:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:05:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 04:05:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:05:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:05:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:05:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 04:05:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:05:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:05:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-12-18 04:05:09,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:05:09,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244878703] [2021-12-18 04:05:09,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244878703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:05:09,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:05:09,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 04:05:09,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519680464] [2021-12-18 04:05:09,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:05:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 04:05:09,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:05:09,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 04:05:09,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-18 04:05:09,961 INFO L87 Difference]: Start difference. First operand 93992 states and 170954 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25)