./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.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 99f9870c0a11847528222b5446256dd4069d375e1dee3e428847b909838b4c1b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:08:26,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:08:26,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:08:26,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:08:26,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:08:26,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:08:26,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:08:26,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:08:26,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:08:26,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:08:26,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:08:26,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:08:26,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:08:26,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:08:26,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:08:26,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:08:26,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:08:26,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:08:26,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:08:26,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:08:26,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:08:26,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:08:26,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:08:26,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:08:26,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:08:26,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:08:26,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:08:26,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:08:26,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:08:26,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:08:26,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:08:26,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:08:26,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:08:26,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:08:26,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:08:26,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:08:26,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:08:26,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:08:26,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:08:26,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:08:26,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:08:26,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:08:26,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:08:26,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:08:26,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:08:26,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:08:26,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:08:26,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:08:26,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:08:26,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:08:26,229 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:08:26,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:08:26,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:08:26,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:08:26,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:08:26,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:08:26,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:08:26,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:08:26,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:08:26,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:08:26,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:08:26,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:08:26,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:08:26,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:08:26,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:08:26,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:08:26,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:08:26,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:08:26,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:08:26,234 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:08:26,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:08:26,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:08:26,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:08:26,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f9870c0a11847528222b5446256dd4069d375e1dee3e428847b909838b4c1b [2021-12-21 16:08:26,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:08:26,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:08:26,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:08:26,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:08:26,454 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:08:26,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2021-12-21 16:08:26,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376c0823f/658b6674282947cbba1414abf8712a12/FLAG5aa40f40c [2021-12-21 16:08:27,080 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:08:27,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2021-12-21 16:08:27,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376c0823f/658b6674282947cbba1414abf8712a12/FLAG5aa40f40c [2021-12-21 16:08:27,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376c0823f/658b6674282947cbba1414abf8712a12 [2021-12-21 16:08:27,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:08:27,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:08:27,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:08:27,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:08:27,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:08:27,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:08:27" (1/1) ... [2021-12-21 16:08:27,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78222403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:27, skipping insertion in model container [2021-12-21 16:08:27,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:08:27" (1/1) ... [2021-12-21 16:08:27,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:08:27,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:08:28,129 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i[164521,164534] [2021-12-21 16:08:28,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:08:28,495 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:08:28,607 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i[164521,164534] [2021-12-21 16:08:28,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:08:28,749 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:08:28,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28 WrapperNode [2021-12-21 16:08:28,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:08:28,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:08:28,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:08:28,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:08:28,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:28,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:28,890 INFO L137 Inliner]: procedures = 157, calls = 675, calls flagged for inlining = 60, calls inlined = 51, statements flattened = 1529 [2021-12-21 16:08:28,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:08:28,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:08:28,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:08:28,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:08:28,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:28,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:28,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:28,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:28,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:28,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:28,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:29,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:08:29,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:08:29,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:08:29,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:08:29,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (1/1) ... [2021-12-21 16:08:29,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:08:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:08:29,042 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) [2021-12-21 16:08:29,060 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 [2021-12-21 16:08:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2021-12-21 16:08:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2021-12-21 16:08:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2021-12-21 16:08:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2021-12-21 16:08:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2021-12-21 16:08:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2021-12-21 16:08:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:08:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-12-21 16:08:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-12-21 16:08:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2021-12-21 16:08:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2021-12-21 16:08:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:08:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:08:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:08:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:08:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:08:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_send_skb [2021-12-21 16:08:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_send_skb [2021-12-21 16:08:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2021-12-21 16:08:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2021-12-21 16:08:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-21 16:08:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-21 16:08:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2021-12-21 16:08:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2021-12-21 16:08:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:08:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:08:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:08:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:08:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:08:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:08:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-21 16:08:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-21 16:08:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2021-12-21 16:08:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2021-12-21 16:08:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2021-12-21 16:08:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2021-12-21 16:08:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:08:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:08:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2021-12-21 16:08:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2021-12-21 16:08:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2021-12-21 16:08:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2021-12-21 16:08:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:08:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:08:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:08:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:08:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:08:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:08:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:08:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2021-12-21 16:08:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2021-12-21 16:08:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2021-12-21 16:08:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2021-12-21 16:08:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:08:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:08:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2021-12-21 16:08:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2021-12-21 16:08:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:08:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-21 16:08:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-21 16:08:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-12-21 16:08:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-12-21 16:08:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 16:08:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 16:08:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2021-12-21 16:08:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2021-12-21 16:08:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:08:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2021-12-21 16:08:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2021-12-21 16:08:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2021-12-21 16:08:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2021-12-21 16:08:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 16:08:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 16:08:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:08:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:08:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2021-12-21 16:08:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2021-12-21 16:08:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:08:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:08:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2021-12-21 16:08:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2021-12-21 16:08:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:08:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-12-21 16:08:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-12-21 16:08:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-21 16:08:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-21 16:08:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2021-12-21 16:08:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2021-12-21 16:08:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2021-12-21 16:08:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2021-12-21 16:08:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2021-12-21 16:08:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2021-12-21 16:08:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:08:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:08:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:08:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:08:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_17 [2021-12-21 16:08:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_17 [2021-12-21 16:08:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_input [2021-12-21 16:08:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_input [2021-12-21 16:08:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:08:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:08:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-21 16:08:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-21 16:08:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure set_value [2021-12-21 16:08:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure set_value [2021-12-21 16:08:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure tiocm_to_gigaset [2021-12-21 16:08:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocm_to_gigaset [2021-12-21 16:08:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-21 16:08:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-21 16:08:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:08:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:08:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:08:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:08:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2021-12-21 16:08:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2021-12-21 16:08:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:08:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:08:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_read_int_callback [2021-12-21 16:08:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_read_int_callback [2021-12-21 16:08:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2021-12-21 16:08:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2021-12-21 16:08:29,504 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:08:29,505 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:08:29,670 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:08:30,045 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-21 16:08:30,997 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:08:31,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:08:31,006 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:08:31,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:08:31 BoogieIcfgContainer [2021-12-21 16:08:31,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:08:31,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:08:31,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:08:31,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:08:31,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:08:27" (1/3) ... [2021-12-21 16:08:31,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed486fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:08:31, skipping insertion in model container [2021-12-21 16:08:31,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:28" (2/3) ... [2021-12-21 16:08:31,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed486fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:08:31, skipping insertion in model container [2021-12-21 16:08:31,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:08:31" (3/3) ... [2021-12-21 16:08:31,014 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2021-12-21 16:08:31,018 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:08:31,018 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:08:31,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:08:31,055 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 [2021-12-21 16:08:31,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:08:31,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 734 states, 514 states have (on average 1.3696498054474708) internal successors, (704), 538 states have internal predecessors, (704), 167 states have call successors, (167), 53 states have call predecessors, (167), 51 states have return successors, (161), 156 states have call predecessors, (161), 161 states have call successors, (161) [2021-12-21 16:08:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 16:08:31,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:31,086 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:31,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:31,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -611998495, now seen corresponding path program 1 times [2021-12-21 16:08:31,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:31,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118363420] [2021-12-21 16:08:31,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:31,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:31,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:08:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:08:31,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:31,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118363420] [2021-12-21 16:08:31,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118363420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:31,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:31,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:08:31,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284279619] [2021-12-21 16:08:31,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:31,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:08:31,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:31,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:08:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:08:31,569 INFO L87 Difference]: Start difference. First operand has 734 states, 514 states have (on average 1.3696498054474708) internal successors, (704), 538 states have internal predecessors, (704), 167 states have call successors, (167), 53 states have call predecessors, (167), 51 states have return successors, (161), 156 states have call predecessors, (161), 161 states have call successors, (161) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 16:08:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:33,744 INFO L93 Difference]: Finished difference Result 2243 states and 3222 transitions. [2021-12-21 16:08:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:08:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-12-21 16:08:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:33,765 INFO L225 Difference]: With dead ends: 2243 [2021-12-21 16:08:33,765 INFO L226 Difference]: Without dead ends: 1492 [2021-12-21 16:08:33,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:33,776 INFO L933 BasicCegarLoop]: 1066 mSDtfsCounter, 1402 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:33,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 2109 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 16:08:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-12-21 16:08:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1382. [2021-12-21 16:08:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 975 states have (on average 1.357948717948718) internal successors, (1324), 1002 states have internal predecessors, (1324), 306 states have call successors, (306), 101 states have call predecessors, (306), 100 states have return successors, (301), 291 states have call predecessors, (301), 301 states have call successors, (301) [2021-12-21 16:08:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1931 transitions. [2021-12-21 16:08:33,888 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1931 transitions. Word has length 56 [2021-12-21 16:08:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:33,889 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 1931 transitions. [2021-12-21 16:08:33,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 16:08:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1931 transitions. [2021-12-21 16:08:33,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-21 16:08:33,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:33,893 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:33,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:08:33,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:33,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash -63449944, now seen corresponding path program 1 times [2021-12-21 16:08:33,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:33,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496907064] [2021-12-21 16:08:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:33,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:08:34,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:34,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496907064] [2021-12-21 16:08:34,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496907064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:34,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:34,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:34,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533552324] [2021-12-21 16:08:34,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:34,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:34,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:34,115 INFO L87 Difference]: Start difference. First operand 1382 states and 1931 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:35,968 INFO L93 Difference]: Finished difference Result 4455 states and 6379 transitions. [2021-12-21 16:08:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:08:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-12-21 16:08:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:35,984 INFO L225 Difference]: With dead ends: 4455 [2021-12-21 16:08:35,984 INFO L226 Difference]: Without dead ends: 3088 [2021-12-21 16:08:35,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:08:35,990 INFO L933 BasicCegarLoop]: 1081 mSDtfsCounter, 2086 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1040 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1040 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:35,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2208 Valid, 2145 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1040 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 16:08:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2021-12-21 16:08:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 2790. [2021-12-21 16:08:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 1971 states have (on average 1.3546423135464232) internal successors, (2670), 2021 states have internal predecessors, (2670), 608 states have call successors, (608), 201 states have call predecessors, (608), 210 states have return successors, (659), 593 states have call predecessors, (659), 603 states have call successors, (659) [2021-12-21 16:08:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3937 transitions. [2021-12-21 16:08:36,091 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3937 transitions. Word has length 59 [2021-12-21 16:08:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:36,092 INFO L470 AbstractCegarLoop]: Abstraction has 2790 states and 3937 transitions. [2021-12-21 16:08:36,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3937 transitions. [2021-12-21 16:08:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-21 16:08:36,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:36,095 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:36,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:08:36,095 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1967362599, now seen corresponding path program 1 times [2021-12-21 16:08:36,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:36,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938053252] [2021-12-21 16:08:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:36,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:08:36,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:36,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938053252] [2021-12-21 16:08:36,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938053252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:36,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:36,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:36,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476478403] [2021-12-21 16:08:36,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:36,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:36,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:36,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:36,248 INFO L87 Difference]: Start difference. First operand 2790 states and 3937 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:38,449 INFO L93 Difference]: Finished difference Result 8907 states and 12903 transitions. [2021-12-21 16:08:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:08:38,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2021-12-21 16:08:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:38,508 INFO L225 Difference]: With dead ends: 8907 [2021-12-21 16:08:38,508 INFO L226 Difference]: Without dead ends: 6132 [2021-12-21 16:08:38,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:08:38,540 INFO L933 BasicCegarLoop]: 1118 mSDtfsCounter, 1505 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:38,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 2582 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 16:08:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2021-12-21 16:08:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 5599. [2021-12-21 16:08:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 3956 states have (on average 1.3503538928210312) internal successors, (5342), 4052 states have internal predecessors, (5342), 1212 states have call successors, (1212), 401 states have call predecessors, (1212), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2021-12-21 16:08:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 7977 transitions. [2021-12-21 16:08:38,724 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 7977 transitions. Word has length 60 [2021-12-21 16:08:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:38,725 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 7977 transitions. [2021-12-21 16:08:38,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 7977 transitions. [2021-12-21 16:08:38,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-21 16:08:38,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:38,729 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:38,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:08:38,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash -859107893, now seen corresponding path program 1 times [2021-12-21 16:08:38,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:38,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647246711] [2021-12-21 16:08:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:38,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:08:38,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:38,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647246711] [2021-12-21 16:08:38,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647246711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:38,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:38,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:38,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090366528] [2021-12-21 16:08:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:38,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:38,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:38,922 INFO L87 Difference]: Start difference. First operand 5599 states and 7977 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:40,705 INFO L93 Difference]: Finished difference Result 6130 states and 8816 transitions. [2021-12-21 16:08:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:08:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2021-12-21 16:08:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:40,736 INFO L225 Difference]: With dead ends: 6130 [2021-12-21 16:08:40,737 INFO L226 Difference]: Without dead ends: 6127 [2021-12-21 16:08:40,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:08:40,747 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 2054 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:40,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 2200 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 16:08:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2021-12-21 16:08:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 5600. [2021-12-21 16:08:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 3957 states have (on average 1.350265352539803) internal successors, (5343), 4053 states have internal predecessors, (5343), 1212 states have call successors, (1212), 401 states have call predecessors, (1212), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2021-12-21 16:08:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 7978 transitions. [2021-12-21 16:08:40,948 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 7978 transitions. Word has length 61 [2021-12-21 16:08:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:40,950 INFO L470 AbstractCegarLoop]: Abstraction has 5600 states and 7978 transitions. [2021-12-21 16:08:40,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 7978 transitions. [2021-12-21 16:08:40,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-21 16:08:40,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:40,952 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:40,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:08:40,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:40,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash -862945508, now seen corresponding path program 1 times [2021-12-21 16:08:40,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:40,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773364853] [2021-12-21 16:08:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:40,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:08:41,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:41,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773364853] [2021-12-21 16:08:41,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773364853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:41,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:41,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:41,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917898770] [2021-12-21 16:08:41,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:41,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:41,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:41,093 INFO L87 Difference]: Start difference. First operand 5600 states and 7978 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:42,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:42,156 INFO L93 Difference]: Finished difference Result 6126 states and 8812 transitions. [2021-12-21 16:08:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:08:42,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2021-12-21 16:08:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:42,184 INFO L225 Difference]: With dead ends: 6126 [2021-12-21 16:08:42,184 INFO L226 Difference]: Without dead ends: 6123 [2021-12-21 16:08:42,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:08:42,188 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 1472 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:42,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 1322 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 16:08:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2021-12-21 16:08:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 5599. [2021-12-21 16:08:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 3957 states have (on average 1.3500126358352287) internal successors, (5342), 4052 states have internal predecessors, (5342), 1211 states have call successors, (1211), 401 states have call predecessors, (1211), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2021-12-21 16:08:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 7976 transitions. [2021-12-21 16:08:42,401 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 7976 transitions. Word has length 62 [2021-12-21 16:08:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:42,401 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 7976 transitions. [2021-12-21 16:08:42,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:42,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 7976 transitions. [2021-12-21 16:08:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-21 16:08:42,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:42,404 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:42,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:08:42,405 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:42,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash -981906706, now seen corresponding path program 1 times [2021-12-21 16:08:42,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:42,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199161685] [2021-12-21 16:08:42,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:42,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:08:42,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:42,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199161685] [2021-12-21 16:08:42,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199161685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:42,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:42,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:42,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436338463] [2021-12-21 16:08:42,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:42,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:42,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:42,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:42,517 INFO L87 Difference]: Start difference. First operand 5599 states and 7976 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:44,075 INFO L93 Difference]: Finished difference Result 6125 states and 8810 transitions. [2021-12-21 16:08:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:08:44,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2021-12-21 16:08:44,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:44,095 INFO L225 Difference]: With dead ends: 6125 [2021-12-21 16:08:44,096 INFO L226 Difference]: Without dead ends: 6103 [2021-12-21 16:08:44,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:08:44,098 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 1178 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:44,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 1656 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 16:08:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6103 states. [2021-12-21 16:08:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6103 to 5579. [2021-12-21 16:08:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5579 states, 3940 states have (on average 1.35) internal successors, (5319), 4034 states have internal predecessors, (5319), 1209 states have call successors, (1209), 400 states have call predecessors, (1209), 429 states have return successors, (1422), 1196 states have call predecessors, (1422), 1206 states have call successors, (1422) [2021-12-21 16:08:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5579 states to 5579 states and 7950 transitions. [2021-12-21 16:08:44,244 INFO L78 Accepts]: Start accepts. Automaton has 5579 states and 7950 transitions. Word has length 63 [2021-12-21 16:08:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:44,244 INFO L470 AbstractCegarLoop]: Abstraction has 5579 states and 7950 transitions. [2021-12-21 16:08:44,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-21 16:08:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5579 states and 7950 transitions. [2021-12-21 16:08:44,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-21 16:08:44,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:44,251 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:44,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:08:44,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:44,252 INFO L85 PathProgramCache]: Analyzing trace with hash 810077961, now seen corresponding path program 1 times [2021-12-21 16:08:44,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:44,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734459939] [2021-12-21 16:08:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:44,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:08:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 16:08:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 16:08:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:08:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 16:08:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:08:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 16:08:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:08:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 16:08:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 16:08:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 16:08:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 16:08:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 16:08:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 16:08:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 16:08:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-21 16:08:44,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734459939] [2021-12-21 16:08:44,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734459939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:44,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:44,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:08:44,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485757654] [2021-12-21 16:08:44,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:44,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:08:44,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:08:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:08:44,479 INFO L87 Difference]: Start difference. First operand 5579 states and 7950 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 8 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 16:08:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:48,274 INFO L93 Difference]: Finished difference Result 15750 states and 22380 transitions. [2021-12-21 16:08:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 16:08:48,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 8 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 173 [2021-12-21 16:08:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:48,311 INFO L225 Difference]: With dead ends: 15750 [2021-12-21 16:08:48,312 INFO L226 Difference]: Without dead ends: 10186 [2021-12-21 16:08:48,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-12-21 16:08:48,330 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 3225 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 2130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3293 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2130 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:48,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3293 Valid, 3460 Invalid, 3816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2130 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 16:08:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2021-12-21 16:08:48,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 8815. [2021-12-21 16:08:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 6240 states have (on average 1.3532051282051283) internal successors, (8444), 6366 states have internal predecessors, (8444), 1831 states have call successors, (1831), 672 states have call predecessors, (1831), 743 states have return successors, (1994), 1848 states have call predecessors, (1994), 1828 states have call successors, (1994) [2021-12-21 16:08:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 12269 transitions. [2021-12-21 16:08:48,668 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 12269 transitions. Word has length 173 [2021-12-21 16:08:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:48,668 INFO L470 AbstractCegarLoop]: Abstraction has 8815 states and 12269 transitions. [2021-12-21 16:08:48,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 8 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 16:08:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 12269 transitions. [2021-12-21 16:08:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-21 16:08:48,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:48,680 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 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] [2021-12-21 16:08:48,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:08:48,680 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash 862855761, now seen corresponding path program 1 times [2021-12-21 16:08:48,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:48,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688964726] [2021-12-21 16:08:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:48,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:08:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 16:08:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 16:08:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 16:08:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 16:08:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 16:08:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 16:08:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:08:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 16:08:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 16:08:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 16:08:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 16:08:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 16:08:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 16:08:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-21 16:08:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-21 16:08:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-21 16:08:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-21 16:08:48,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:48,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688964726] [2021-12-21 16:08:48,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688964726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:48,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:48,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 16:08:48,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210719677] [2021-12-21 16:08:48,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:48,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 16:08:48,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:48,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 16:08:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:08:48,922 INFO L87 Difference]: Start difference. First operand 8815 states and 12269 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-21 16:08:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:53,221 INFO L93 Difference]: Finished difference Result 20675 states and 29626 transitions. [2021-12-21 16:08:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 16:08:53,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 201 [2021-12-21 16:08:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:53,323 INFO L225 Difference]: With dead ends: 20675 [2021-12-21 16:08:53,323 INFO L226 Difference]: Without dead ends: 11875 [2021-12-21 16:08:53,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2021-12-21 16:08:53,340 INFO L933 BasicCegarLoop]: 1269 mSDtfsCounter, 3141 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 1964 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3265 SdHoareTripleChecker+Valid, 5234 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1964 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:53,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3265 Valid, 5234 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1964 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-21 16:08:53,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2021-12-21 16:08:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 8823. [2021-12-21 16:08:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8823 states, 6248 states have (on average 1.3517925736235596) internal successors, (8446), 6374 states have internal predecessors, (8446), 1831 states have call successors, (1831), 672 states have call predecessors, (1831), 743 states have return successors, (1994), 1848 states have call predecessors, (1994), 1828 states have call successors, (1994) [2021-12-21 16:08:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8823 states to 8823 states and 12271 transitions. [2021-12-21 16:08:53,631 INFO L78 Accepts]: Start accepts. Automaton has 8823 states and 12271 transitions. Word has length 201 [2021-12-21 16:08:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:53,631 INFO L470 AbstractCegarLoop]: Abstraction has 8823 states and 12271 transitions. [2021-12-21 16:08:53,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-21 16:08:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 8823 states and 12271 transitions. [2021-12-21 16:08:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-21 16:08:53,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:53,641 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 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] [2021-12-21 16:08:53,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 16:08:53,641 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1493837649, now seen corresponding path program 1 times [2021-12-21 16:08:53,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:53,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833241786] [2021-12-21 16:08:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:53,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:08:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:08:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:08:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:08:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 16:08:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 16:08:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 16:08:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:08:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 16:08:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 16:08:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:08:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 16:08:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:08:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-21 16:08:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 16:08:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-21 16:08:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-21 16:08:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-21 16:08:53,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:53,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833241786] [2021-12-21 16:08:53,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833241786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:53,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:53,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:08:53,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813882244] [2021-12-21 16:08:53,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:53,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:08:53,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:53,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:08:53,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:08:53,861 INFO L87 Difference]: Start difference. First operand 8823 states and 12271 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-21 16:08:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:58,795 INFO L93 Difference]: Finished difference Result 24095 states and 33897 transitions. [2021-12-21 16:08:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 16:08:58,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 203 [2021-12-21 16:08:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:58,845 INFO L225 Difference]: With dead ends: 24095 [2021-12-21 16:08:58,845 INFO L226 Difference]: Without dead ends: 15287 [2021-12-21 16:08:58,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-12-21 16:08:58,870 INFO L933 BasicCegarLoop]: 1746 mSDtfsCounter, 3109 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 2602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3228 SdHoareTripleChecker+Valid, 5080 SdHoareTripleChecker+Invalid, 4477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2602 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:58,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3228 Valid, 5080 Invalid, 4477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2602 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-21 16:08:58,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15287 states. [2021-12-21 16:08:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15287 to 13211. [2021-12-21 16:08:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 9342 states have (on average 1.3526011560693643) internal successors, (12636), 9534 states have internal predecessors, (12636), 2745 states have call successors, (2745), 1016 states have call predecessors, (2745), 1123 states have return successors, (2991), 2764 states have call predecessors, (2991), 2742 states have call successors, (2991) [2021-12-21 16:08:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 18372 transitions. [2021-12-21 16:08:59,440 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 18372 transitions. Word has length 203 [2021-12-21 16:08:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:59,441 INFO L470 AbstractCegarLoop]: Abstraction has 13211 states and 18372 transitions. [2021-12-21 16:08:59,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-21 16:08:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 18372 transitions. [2021-12-21 16:08:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-21 16:08:59,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:59,456 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 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] [2021-12-21 16:08:59,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 16:08:59,456 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:59,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash 195434766, now seen corresponding path program 1 times [2021-12-21 16:08:59,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:59,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768143772] [2021-12-21 16:08:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:59,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:08:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:08:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 16:08:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:08:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 16:08:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:08:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:08:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 16:08:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 16:08:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:08:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 16:08:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 16:08:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 16:08:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 16:08:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 16:08:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-21 16:08:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-21 16:08:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:08:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-21 16:08:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-21 16:08:59,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:59,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768143772] [2021-12-21 16:08:59,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768143772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:59,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:59,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:08:59,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071101355] [2021-12-21 16:08:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:59,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:08:59,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:08:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:08:59,676 INFO L87 Difference]: Start difference. First operand 13211 states and 18372 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-21 16:09:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:03,216 INFO L93 Difference]: Finished difference Result 24017 states and 33605 transitions. [2021-12-21 16:09:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 16:09:03,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 207 [2021-12-21 16:09:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:03,252 INFO L225 Difference]: With dead ends: 24017 [2021-12-21 16:09:03,252 INFO L226 Difference]: Without dead ends: 10819 [2021-12-21 16:09:03,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-12-21 16:09:03,280 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 1877 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 1465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 3353 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1465 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:03,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 3353 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1465 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-21 16:09:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2021-12-21 16:09:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 9366. [2021-12-21 16:09:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9366 states, 6630 states have (on average 1.3506787330316743) internal successors, (8955), 6763 states have internal predecessors, (8955), 1931 states have call successors, (1931), 733 states have call predecessors, (1931), 804 states have return successors, (2094), 1943 states have call predecessors, (2094), 1928 states have call successors, (2094) [2021-12-21 16:09:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9366 states to 9366 states and 12980 transitions. [2021-12-21 16:09:03,732 INFO L78 Accepts]: Start accepts. Automaton has 9366 states and 12980 transitions. Word has length 207 [2021-12-21 16:09:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:03,732 INFO L470 AbstractCegarLoop]: Abstraction has 9366 states and 12980 transitions. [2021-12-21 16:09:03,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-21 16:09:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 9366 states and 12980 transitions. [2021-12-21 16:09:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-21 16:09:03,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:03,746 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 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, 1] [2021-12-21 16:09:03,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 16:09:03,746 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash 404988477, now seen corresponding path program 1 times [2021-12-21 16:09:03,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:03,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865455517] [2021-12-21 16:09:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:03,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:09:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:09:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:09:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:09:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:09:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:09:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 16:09:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 16:09:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:09:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 16:09:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 16:09:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:09:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 16:09:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 16:09:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 16:09:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 16:09:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:09:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-21 16:09:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:09:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 16:09:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-21 16:09:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 16:09:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 16:09:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-21 16:09:03,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:03,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865455517] [2021-12-21 16:09:03,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865455517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:03,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:09:03,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:09:03,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124394910] [2021-12-21 16:09:03,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:03,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:09:03,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:03,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:09:03,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:09:03,953 INFO L87 Difference]: Start difference. First operand 9366 states and 12980 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-21 16:09:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:07,984 INFO L93 Difference]: Finished difference Result 19766 states and 27668 transitions. [2021-12-21 16:09:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 16:09:07,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 211 [2021-12-21 16:09:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:08,071 INFO L225 Difference]: With dead ends: 19766 [2021-12-21 16:09:08,071 INFO L226 Difference]: Without dead ends: 10772 [2021-12-21 16:09:08,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-12-21 16:09:08,119 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 1612 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 1242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1242 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:08,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 3616 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1242 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-21 16:09:08,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2021-12-21 16:09:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 9374. [2021-12-21 16:09:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9374 states, 6638 states have (on average 1.3502561012353118) internal successors, (8963), 6771 states have internal predecessors, (8963), 1931 states have call successors, (1931), 733 states have call predecessors, (1931), 804 states have return successors, (2094), 1943 states have call predecessors, (2094), 1928 states have call successors, (2094) [2021-12-21 16:09:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9374 states to 9374 states and 12988 transitions. [2021-12-21 16:09:08,623 INFO L78 Accepts]: Start accepts. Automaton has 9374 states and 12988 transitions. Word has length 211 [2021-12-21 16:09:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:08,624 INFO L470 AbstractCegarLoop]: Abstraction has 9374 states and 12988 transitions. [2021-12-21 16:09:08,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-21 16:09:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 9374 states and 12988 transitions. [2021-12-21 16:09:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-21 16:09:08,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:08,634 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 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, 1] [2021-12-21 16:09:08,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 16:09:08,635 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:08,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1242374465, now seen corresponding path program 1 times [2021-12-21 16:09:08,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:08,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269123180] [2021-12-21 16:09:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:08,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:09:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:09:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:09:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:09:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:09:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:09:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 16:09:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 16:09:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:09:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 16:09:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 16:09:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:09:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 16:09:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 16:09:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 16:09:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 16:09:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:09:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-21 16:09:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:09:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 16:09:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-21 16:09:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 16:09:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 16:09:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-21 16:09:08,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:08,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269123180] [2021-12-21 16:09:08,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269123180] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:09:08,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797215269] [2021-12-21 16:09:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:08,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:09:08,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:09:08,940 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) [2021-12-21 16:09:08,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 16:09:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 16:09:09,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:09:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-21 16:09:09,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:09:09,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797215269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:09,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:09:09,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2021-12-21 16:09:09,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522440645] [2021-12-21 16:09:09,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:09,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:09:09,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:09,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:09:09,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-21 16:09:09,755 INFO L87 Difference]: Start difference. First operand 9374 states and 12988 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-21 16:09:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:11,112 INFO L93 Difference]: Finished difference Result 30527 states and 43142 transitions. [2021-12-21 16:09:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:09:11,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 211 [2021-12-21 16:09:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:11,179 INFO L225 Difference]: With dead ends: 30527 [2021-12-21 16:09:11,180 INFO L226 Difference]: Without dead ends: 21525 [2021-12-21 16:09:11,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-12-21 16:09:11,207 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 1528 mSDsluCounter, 4646 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:11,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 6827 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 16:09:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21525 states. [2021-12-21 16:09:12,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21525 to 18518. [2021-12-21 16:09:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18518 states, 13038 states have (on average 1.3469090351280872) internal successors, (17561), 13331 states have internal predecessors, (17561), 3907 states have call successors, (3907), 1429 states have call predecessors, (3907), 1572 states have return successors, (4260), 3903 states have call predecessors, (4260), 3904 states have call successors, (4260) [2021-12-21 16:09:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18518 states to 18518 states and 25728 transitions. [2021-12-21 16:09:12,089 INFO L78 Accepts]: Start accepts. Automaton has 18518 states and 25728 transitions. Word has length 211 [2021-12-21 16:09:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:12,090 INFO L470 AbstractCegarLoop]: Abstraction has 18518 states and 25728 transitions. [2021-12-21 16:09:12,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-21 16:09:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18518 states and 25728 transitions. [2021-12-21 16:09:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-21 16:09:12,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:12,108 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 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, 1] [2021-12-21 16:09:12,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 16:09:12,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 16:09:12,324 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1247154497, now seen corresponding path program 1 times [2021-12-21 16:09:12,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:12,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284678817] [2021-12-21 16:09:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:12,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:09:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:09:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:09:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:09:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:09:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:09:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 16:09:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 16:09:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:09:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 16:09:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 16:09:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:09:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 16:09:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 16:09:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 16:09:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 16:09:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:09:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-21 16:09:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:09:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 16:09:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-21 16:09:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 16:09:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 16:09:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-21 16:09:12,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284678817] [2021-12-21 16:09:12,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284678817] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:09:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273820585] [2021-12-21 16:09:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:12,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:09:12,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:09:12,793 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) [2021-12-21 16:09:12,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 16:09:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 16:09:13,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:09:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-21 16:09:13,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:09:13,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273820585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:13,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:09:13,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 17 [2021-12-21 16:09:13,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067857470] [2021-12-21 16:09:13,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:13,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:09:13,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:09:13,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-21 16:09:13,965 INFO L87 Difference]: Start difference. First operand 18518 states and 25728 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-21 16:09:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:16,633 INFO L93 Difference]: Finished difference Result 39681 states and 55933 transitions. [2021-12-21 16:09:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:09:16,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 211 [2021-12-21 16:09:16,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:16,708 INFO L225 Difference]: With dead ends: 39681 [2021-12-21 16:09:16,708 INFO L226 Difference]: Without dead ends: 21535 [2021-12-21 16:09:16,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-21 16:09:16,754 INFO L933 BasicCegarLoop]: 1875 mSDtfsCounter, 1564 mSDsluCounter, 4870 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 6745 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:16,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 6745 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 16:09:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21535 states. [2021-12-21 16:09:17,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21535 to 18546. [2021-12-21 16:09:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18546 states, 13058 states have (on average 1.3463776994945627) internal successors, (17581), 13355 states have internal predecessors, (17581), 3907 states have call successors, (3907), 1429 states have call predecessors, (3907), 1580 states have return successors, (4300), 3907 states have call predecessors, (4300), 3904 states have call successors, (4300) [2021-12-21 16:09:17,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18546 states to 18546 states and 25788 transitions. [2021-12-21 16:09:17,614 INFO L78 Accepts]: Start accepts. Automaton has 18546 states and 25788 transitions. Word has length 211 [2021-12-21 16:09:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:17,615 INFO L470 AbstractCegarLoop]: Abstraction has 18546 states and 25788 transitions. [2021-12-21 16:09:17,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-21 16:09:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 18546 states and 25788 transitions. [2021-12-21 16:09:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-21 16:09:17,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:17,633 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:09:17,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 16:09:17,847 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,SelfDestructingSolverStorable12 [2021-12-21 16:09:17,848 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:17,848 INFO L85 PathProgramCache]: Analyzing trace with hash -862062968, now seen corresponding path program 1 times [2021-12-21 16:09:17,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:17,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249169461] [2021-12-21 16:09:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:17,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:09:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:09:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:09:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:09:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:09:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:09:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 16:09:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 16:09:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:09:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 16:09:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 16:09:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 16:09:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 16:09:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 16:09:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 16:09:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 16:09:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-21 16:09:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 16:09:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 16:09:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-21 16:09:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 16:09:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-21 16:09:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 16:09:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-21 16:09:18,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:18,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249169461] [2021-12-21 16:09:18,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249169461] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:09:18,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391554482] [2021-12-21 16:09:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:18,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:09:18,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:09:18,258 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) [2021-12-21 16:09:18,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 16:09:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:18,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 16:09:18,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:09:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-21 16:09:19,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:09:19,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391554482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:19,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:09:19,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 17 [2021-12-21 16:09:19,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555093081] [2021-12-21 16:09:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:19,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:09:19,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:19,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:09:19,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-21 16:09:19,311 INFO L87 Difference]: Start difference. First operand 18546 states and 25788 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-21 16:09:22,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:22,720 INFO L93 Difference]: Finished difference Result 42953 states and 60146 transitions. [2021-12-21 16:09:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 16:09:22,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 217 [2021-12-21 16:09:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:22,806 INFO L225 Difference]: With dead ends: 42953 [2021-12-21 16:09:22,806 INFO L226 Difference]: Without dead ends: 24779 [2021-12-21 16:09:22,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-12-21 16:09:22,851 INFO L933 BasicCegarLoop]: 2115 mSDtfsCounter, 2701 mSDsluCounter, 5255 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 7370 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:22,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 7370 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 16:09:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24779 states. [2021-12-21 16:09:23,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24779 to 21352. [2021-12-21 16:09:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21352 states, 15017 states have (on average 1.345008989811547) internal successors, (20198), 15377 states have internal predecessors, (20198), 4529 states have call successors, (4529), 1621 states have call predecessors, (4529), 1805 states have return successors, (5001), 4523 states have call predecessors, (5001), 4526 states have call successors, (5001) [2021-12-21 16:09:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21352 states to 21352 states and 29728 transitions. [2021-12-21 16:09:23,950 INFO L78 Accepts]: Start accepts. Automaton has 21352 states and 29728 transitions. Word has length 217 [2021-12-21 16:09:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:23,951 INFO L470 AbstractCegarLoop]: Abstraction has 21352 states and 29728 transitions. [2021-12-21 16:09:23,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-21 16:09:23,951 INFO L276 IsEmpty]: Start isEmpty. Operand 21352 states and 29728 transitions. [2021-12-21 16:09:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-21 16:09:23,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:23,964 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 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, 1] [2021-12-21 16:09:23,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 16:09:24,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:09:24,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:24,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1505687327, now seen corresponding path program 2 times [2021-12-21 16:09:24,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:24,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711542776] [2021-12-21 16:09:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:24,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:09:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:09:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:09:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:09:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:09:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 16:09:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 16:09:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 16:09:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:09:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 16:09:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 16:09:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 16:09:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 16:09:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 16:09:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 16:09:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 16:09:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 16:09:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-21 16:09:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-21 16:09:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 16:09:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-21 16:09:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-21 16:09:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-21 16:09:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-21 16:09:24,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:24,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711542776] [2021-12-21 16:09:24,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711542776] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:09:24,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524498935] [2021-12-21 16:09:24,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 16:09:24,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:09:24,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:09:24,522 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) [2021-12-21 16:09:24,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 16:09:25,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 16:09:25,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 16:09:25,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 16:09:25,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:09:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-21 16:09:25,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:09:25,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524498935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:25,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:09:25,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2021-12-21 16:09:25,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276557194] [2021-12-21 16:09:25,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:25,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:09:25,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:09:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 16:09:25,747 INFO L87 Difference]: Start difference. First operand 21352 states and 29728 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)