./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.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 03d5d1a576959110e79c00ca2825754bce7439905d85699b470a90adbbee10ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:52:17,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:52:17,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:52:17,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:52:17,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:52:17,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:52:17,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:52:17,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:52:17,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:52:17,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:52:17,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:52:17,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:52:17,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:52:17,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:52:17,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:52:17,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:52:17,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:52:17,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:52:17,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:52:17,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:52:17,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:52:17,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:52:17,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:52:17,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:52:17,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:52:17,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:52:17,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:52:17,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:52:17,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:52:17,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:52:17,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:52:17,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:52:17,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:52:17,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:52:17,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:52:17,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:52:17,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:52:17,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:52:17,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:52:17,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:52:17,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:52:17,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:52:18,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:52:18,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:52:18,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:52:18,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:52:18,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:52:18,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:52:18,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:52:18,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:52:18,013 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:52:18,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:52:18,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:52:18,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:52:18,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:52:18,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:52:18,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:52:18,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:52:18,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:52:18,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:52:18,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:52:18,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:52:18,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:52:18,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:52:18,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:52:18,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:52:18,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:52:18,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:52:18,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:52:18,017 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:52:18,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:52:18,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:52:18,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:52:18,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d5d1a576959110e79c00ca2825754bce7439905d85699b470a90adbbee10ad [2021-12-22 14:52:18,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:52:18,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:52:18,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:52:18,244 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:52:18,244 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:52:18,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2021-12-22 14:52:18,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d5d0458d/e69f51b5967249f3b94d8f26aa0da69d/FLAGe5f217f0d [2021-12-22 14:52:18,904 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:52:18,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2021-12-22 14:52:18,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d5d0458d/e69f51b5967249f3b94d8f26aa0da69d/FLAGe5f217f0d [2021-12-22 14:52:19,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d5d0458d/e69f51b5967249f3b94d8f26aa0da69d [2021-12-22 14:52:19,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:52:19,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:52:19,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:52:19,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:52:19,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:52:19,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:52:19" (1/1) ... [2021-12-22 14:52:19,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4c31c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:19, skipping insertion in model container [2021-12-22 14:52:19,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:52:19" (1/1) ... [2021-12-22 14:52:19,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:52:19,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:52:20,003 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i[164960,164973] [2021-12-22 14:52:20,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:52:20,034 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:52:20,260 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i[164960,164973] [2021-12-22 14:52:20,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:52:20,328 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:52:20,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20 WrapperNode [2021-12-22 14:52:20,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:52:20,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:52:20,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:52:20,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:52:20,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,446 INFO L137 Inliner]: procedures = 151, calls = 761, calls flagged for inlining = 67, calls inlined = 53, statements flattened = 1701 [2021-12-22 14:52:20,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:52:20,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:52:20,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:52:20,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:52:20,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:52:20,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:52:20,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:52:20,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:52:20,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (1/1) ... [2021-12-22 14:52:20,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:52:20,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:20,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:52:20,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:52:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure dlm_lock_sync [2021-12-22 14:52:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure dlm_lock_sync [2021-12-22 14:52:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure lockres_free [2021-12-22 14:52:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure lockres_free [2021-12-22 14:52:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:52:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:52:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:52:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:52:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:52:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:52:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 14:52:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 14:52:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure dlm_release_lockspace [2021-12-22 14:52:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dlm_release_lockspace [2021-12-22 14:52:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure lock_comm [2021-12-22 14:52:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_comm [2021-12-22 14:52:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:52:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:52:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:52:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:52:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-22 14:52:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-22 14:52:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-22 14:52:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-22 14:52:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:52:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:52:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-12-22 14:52:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-12-22 14:52:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:52:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:52:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:52:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-22 14:52:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-22 14:52:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2021-12-22 14:52:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2021-12-22 14:52:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:52:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:52:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_copy_from_slot [2021-12-22 14:52:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_copy_from_slot [2021-12-22 14:52:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 14:52:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 14:52:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:52:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:52:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:52:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 14:52:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 14:52:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-22 14:52:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-22 14:52:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure md_register_thread [2021-12-22 14:52:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure md_register_thread [2021-12-22 14:52:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:52:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure md_unregister_thread [2021-12-22 14:52:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure md_unregister_thread [2021-12-22 14:52:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-22 14:52:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-22 14:52:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:52:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:52:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure resync_send [2021-12-22 14:52:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure resync_send [2021-12-22 14:52:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-22 14:52:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-22 14:52:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure lockres_init [2021-12-22 14:52:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure lockres_init [2021-12-22 14:52:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:52:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_comm [2021-12-22 14:52:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_comm [2021-12-22 14:52:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-22 14:52:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-22 14:52:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:52:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:52:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure resync_info_update [2021-12-22 14:52:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure resync_info_update [2021-12-22 14:52:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:52:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:52:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure __sendmsg [2021-12-22 14:52:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __sendmsg [2021-12-22 14:52:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-22 14:52:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-22 14:52:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:52:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure pretty_uuid [2021-12-22 14:52:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure pretty_uuid [2021-12-22 14:52:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:52:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:52:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:52:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure sendmsg [2021-12-22 14:52:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure sendmsg [2021-12-22 14:52:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure dlm_unlock_sync [2021-12-22 14:52:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dlm_unlock_sync [2021-12-22 14:52:21,040 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:52:21,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:52:21,147 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:52:21,751 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:52:21,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:52:21,758 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:52:21,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:52:21 BoogieIcfgContainer [2021-12-22 14:52:21,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:52:21,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:52:21,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:52:21,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:52:21,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:52:19" (1/3) ... [2021-12-22 14:52:21,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aedba54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:52:21, skipping insertion in model container [2021-12-22 14:52:21,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:20" (2/3) ... [2021-12-22 14:52:21,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aedba54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:52:21, skipping insertion in model container [2021-12-22 14:52:21,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:52:21" (3/3) ... [2021-12-22 14:52:21,765 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2021-12-22 14:52:21,768 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:52:21,768 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:52:21,798 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:52:21,802 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:52:21,802 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:52:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 564 states, 395 states have (on average 1.3113924050632912) internal successors, (518), 406 states have internal predecessors, (518), 132 states have call successors, (132), 36 states have call predecessors, (132), 35 states have return successors, (128), 127 states have call predecessors, (128), 128 states have call successors, (128) [2021-12-22 14:52:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-22 14:52:21,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:21,830 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:21,831 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:21,834 INFO L85 PathProgramCache]: Analyzing trace with hash 108953653, now seen corresponding path program 1 times [2021-12-22 14:52:21,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:21,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690047892] [2021-12-22 14:52:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:21,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:52:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:52:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 14:52:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:52:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:52:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 14:52:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:52:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 14:52:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:52:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 14:52:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-12-22 14:52:22,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:22,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690047892] [2021-12-22 14:52:22,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690047892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:22,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:52:22,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:52:22,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945800669] [2021-12-22 14:52:22,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:22,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:52:22,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:52:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:52:22,367 INFO L87 Difference]: Start difference. First operand has 564 states, 395 states have (on average 1.3113924050632912) internal successors, (518), 406 states have internal predecessors, (518), 132 states have call successors, (132), 36 states have call predecessors, (132), 35 states have return successors, (128), 127 states have call predecessors, (128), 128 states have call successors, (128) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:52:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:22,911 INFO L93 Difference]: Finished difference Result 1151 states and 1655 transitions. [2021-12-22 14:52:22,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:52:22,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 184 [2021-12-22 14:52:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:22,932 INFO L225 Difference]: With dead ends: 1151 [2021-12-22 14:52:22,934 INFO L226 Difference]: Without dead ends: 581 [2021-12-22 14:52:22,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:52:22,948 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 250 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:22,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 1191 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 14:52:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-12-22 14:52:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 553. [2021-12-22 14:52:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 390 states have (on average 1.2974358974358975) internal successors, (506), 395 states have internal predecessors, (506), 128 states have call successors, (128), 35 states have call predecessors, (128), 34 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2021-12-22 14:52:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 760 transitions. [2021-12-22 14:52:23,047 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 760 transitions. Word has length 184 [2021-12-22 14:52:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:23,048 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 760 transitions. [2021-12-22 14:52:23,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:52:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 760 transitions. [2021-12-22 14:52:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-22 14:52:23,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:23,055 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:23,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:52:23,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash 825195323, now seen corresponding path program 1 times [2021-12-22 14:52:23,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:23,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768077815] [2021-12-22 14:52:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:23,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:52:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:52:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 14:52:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:52:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:52:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 14:52:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:52:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 14:52:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:52:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 14:52:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-12-22 14:52:23,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:23,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768077815] [2021-12-22 14:52:23,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768077815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:23,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:52:23,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:52:23,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743893071] [2021-12-22 14:52:23,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:23,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:52:23,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:23,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:52:23,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:52:23,348 INFO L87 Difference]: Start difference. First operand 553 states and 760 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-22 14:52:24,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:24,419 INFO L93 Difference]: Finished difference Result 1614 states and 2294 transitions. [2021-12-22 14:52:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:52:24,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2021-12-22 14:52:24,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:24,426 INFO L225 Difference]: With dead ends: 1614 [2021-12-22 14:52:24,427 INFO L226 Difference]: Without dead ends: 1097 [2021-12-22 14:52:24,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:52:24,430 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 958 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:24,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 2412 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 14:52:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2021-12-22 14:52:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1041. [2021-12-22 14:52:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 741 states have (on average 1.3076923076923077) internal successors, (969), 750 states have internal predecessors, (969), 234 states have call successors, (234), 66 states have call predecessors, (234), 65 states have return successors, (232), 230 states have call predecessors, (232), 232 states have call successors, (232) [2021-12-22 14:52:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1435 transitions. [2021-12-22 14:52:24,470 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1435 transitions. Word has length 184 [2021-12-22 14:52:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:24,471 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1435 transitions. [2021-12-22 14:52:24,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-22 14:52:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1435 transitions. [2021-12-22 14:52:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-22 14:52:24,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:24,474 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:24,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:52:24,474 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -140417823, now seen corresponding path program 1 times [2021-12-22 14:52:24,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:24,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263258962] [2021-12-22 14:52:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:24,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:52:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:52:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 14:52:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:52:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:52:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 14:52:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:52:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 14:52:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:52:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 14:52:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-12-22 14:52:24,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:24,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263258962] [2021-12-22 14:52:24,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263258962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:24,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:52:24,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:52:24,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605794500] [2021-12-22 14:52:24,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:24,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:52:24,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:52:24,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:52:24,752 INFO L87 Difference]: Start difference. First operand 1041 states and 1435 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-22 14:52:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:25,796 INFO L93 Difference]: Finished difference Result 2098 states and 2962 transitions. [2021-12-22 14:52:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:52:25,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 187 [2021-12-22 14:52:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:25,802 INFO L225 Difference]: With dead ends: 2098 [2021-12-22 14:52:25,802 INFO L226 Difference]: Without dead ends: 1093 [2021-12-22 14:52:25,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:52:25,806 INFO L933 BasicCegarLoop]: 1107 mSDtfsCounter, 1257 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:25,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1338 Valid, 3122 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 14:52:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2021-12-22 14:52:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1040. [2021-12-22 14:52:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 740 states have (on average 1.304054054054054) internal successors, (965), 749 states have internal predecessors, (965), 234 states have call successors, (234), 66 states have call predecessors, (234), 65 states have return successors, (232), 230 states have call predecessors, (232), 232 states have call successors, (232) [2021-12-22 14:52:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1431 transitions. [2021-12-22 14:52:25,872 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1431 transitions. Word has length 187 [2021-12-22 14:52:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:25,873 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1431 transitions. [2021-12-22 14:52:25,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-22 14:52:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1431 transitions. [2021-12-22 14:52:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-22 14:52:25,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:25,877 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-22 14:52:25,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:52:25,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1713361567, now seen corresponding path program 1 times [2021-12-22 14:52:25,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:25,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851452684] [2021-12-22 14:52:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:25,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:52:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:52:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 14:52:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:52:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:52:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 14:52:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:52:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 14:52:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:52:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 14:52:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:52:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-22 14:52:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-22 14:52:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2021-12-22 14:52:26,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:26,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851452684] [2021-12-22 14:52:26,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851452684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:26,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:52:26,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:52:26,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554575284] [2021-12-22 14:52:26,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:26,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:52:26,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:52:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:52:26,196 INFO L87 Difference]: Start difference. First operand 1040 states and 1431 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-22 14:52:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:27,085 INFO L93 Difference]: Finished difference Result 3148 states and 4466 transitions. [2021-12-22 14:52:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:52:27,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 245 [2021-12-22 14:52:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:27,096 INFO L225 Difference]: With dead ends: 3148 [2021-12-22 14:52:27,096 INFO L226 Difference]: Without dead ends: 2140 [2021-12-22 14:52:27,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:52:27,100 INFO L933 BasicCegarLoop]: 1053 mSDtfsCounter, 1056 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:27,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2248 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 14:52:27,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-12-22 14:52:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2033. [2021-12-22 14:52:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1452 states have (on average 1.3078512396694215) internal successors, (1899), 1469 states have internal predecessors, (1899), 451 states have call successors, (451), 130 states have call predecessors, (451), 129 states have return successors, (449), 445 states have call predecessors, (449), 449 states have call successors, (449) [2021-12-22 14:52:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2799 transitions. [2021-12-22 14:52:27,167 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2799 transitions. Word has length 245 [2021-12-22 14:52:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:27,168 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 2799 transitions. [2021-12-22 14:52:27,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-22 14:52:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2799 transitions. [2021-12-22 14:52:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-22 14:52:27,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:27,172 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:27,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:52:27,173 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1250643980, now seen corresponding path program 1 times [2021-12-22 14:52:27,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:27,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371052808] [2021-12-22 14:52:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:27,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:52:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:52:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 14:52:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:52:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:52:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 14:52:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:52:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 14:52:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:52:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 14:52:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:52:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-22 14:52:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-22 14:52:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2021-12-22 14:52:27,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:27,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371052808] [2021-12-22 14:52:27,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371052808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:27,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:52:27,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:52:27,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709872366] [2021-12-22 14:52:27,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:27,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:52:27,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:27,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:52:27,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:52:27,438 INFO L87 Difference]: Start difference. First operand 2033 states and 2799 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-22 14:52:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:28,335 INFO L93 Difference]: Finished difference Result 4862 states and 6998 transitions. [2021-12-22 14:52:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:52:28,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 267 [2021-12-22 14:52:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:28,348 INFO L225 Difference]: With dead ends: 4862 [2021-12-22 14:52:28,348 INFO L226 Difference]: Without dead ends: 2865 [2021-12-22 14:52:28,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:52:28,354 INFO L933 BasicCegarLoop]: 1039 mSDtfsCounter, 475 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:28,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 3370 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 14:52:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-12-22 14:52:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2037. [2021-12-22 14:52:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1456 states have (on average 1.3070054945054945) internal successors, (1903), 1473 states have internal predecessors, (1903), 451 states have call successors, (451), 130 states have call predecessors, (451), 129 states have return successors, (449), 445 states have call predecessors, (449), 449 states have call successors, (449) [2021-12-22 14:52:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2803 transitions. [2021-12-22 14:52:28,424 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2803 transitions. Word has length 267 [2021-12-22 14:52:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:28,425 INFO L470 AbstractCegarLoop]: Abstraction has 2037 states and 2803 transitions. [2021-12-22 14:52:28,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-22 14:52:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2803 transitions. [2021-12-22 14:52:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-22 14:52:28,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:28,430 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:28,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:52:28,430 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash -29219698, now seen corresponding path program 1 times [2021-12-22 14:52:28,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:28,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789775786] [2021-12-22 14:52:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:28,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:52:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:52:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 14:52:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:52:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:52:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 14:52:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:52:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 14:52:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:52:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 14:52:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:52:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-22 14:52:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-22 14:52:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-12-22 14:52:28,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:28,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789775786] [2021-12-22 14:52:28,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789775786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:52:28,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734310046] [2021-12-22 14:52:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:28,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:28,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:28,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:52:28,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:52:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:29,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:52:29,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:52:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2021-12-22 14:52:29,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:52:29,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734310046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:29,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:52:29,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-12-22 14:52:29,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96037730] [2021-12-22 14:52:29,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:29,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:52:29,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:52:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:52:29,745 INFO L87 Difference]: Start difference. First operand 2037 states and 2803 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-22 14:52:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:29,989 INFO L93 Difference]: Finished difference Result 3636 states and 5105 transitions. [2021-12-22 14:52:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:52:29,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 267 [2021-12-22 14:52:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:30,000 INFO L225 Difference]: With dead ends: 3636 [2021-12-22 14:52:30,000 INFO L226 Difference]: Without dead ends: 2630 [2021-12-22 14:52:30,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 344 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:52:30,005 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 933 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:30,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 3444 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:52:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-12-22 14:52:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2043. [2021-12-22 14:52:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1462 states have (on average 1.3057455540355678) internal successors, (1909), 1479 states have internal predecessors, (1909), 451 states have call successors, (451), 130 states have call predecessors, (451), 129 states have return successors, (449), 445 states have call predecessors, (449), 449 states have call successors, (449) [2021-12-22 14:52:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2809 transitions. [2021-12-22 14:52:30,117 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2809 transitions. Word has length 267 [2021-12-22 14:52:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:30,117 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 2809 transitions. [2021-12-22 14:52:30,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-22 14:52:30,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2809 transitions. [2021-12-22 14:52:30,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-22 14:52:30,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:30,123 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:30,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:52:30,330 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,SelfDestructingSolverStorable5 [2021-12-22 14:52:30,331 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:30,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1121162219, now seen corresponding path program 1 times [2021-12-22 14:52:30,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:30,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893266495] [2021-12-22 14:52:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:30,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:52:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:52:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 14:52:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:52:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:52:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 14:52:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:52:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 14:52:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:52:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 14:52:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:52:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-22 14:52:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-22 14:52:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-22 14:52:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2021-12-22 14:52:30,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:30,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893266495] [2021-12-22 14:52:30,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893266495] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:52:30,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321053986] [2021-12-22 14:52:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:30,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:30,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:30,666 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) [2021-12-22 14:52:30,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:52:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:31,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 14:52:31,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:52:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2021-12-22 14:52:31,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:52:31,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321053986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:31,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:52:31,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-12-22 14:52:31,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936958583] [2021-12-22 14:52:31,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:31,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:52:31,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:31,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:52:31,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:52:31,729 INFO L87 Difference]: Start difference. First operand 2043 states and 2809 transitions. Second operand has 6 states, 5 states have (on average 21.4) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-22 14:52:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:31,921 INFO L93 Difference]: Finished difference Result 4091 states and 5650 transitions. [2021-12-22 14:52:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:52:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.4) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 281 [2021-12-22 14:52:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:31,930 INFO L225 Difference]: With dead ends: 4091 [2021-12-22 14:52:31,931 INFO L226 Difference]: Without dead ends: 2047 [2021-12-22 14:52:31,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:52:31,938 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 6 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:31,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3687 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:52:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2021-12-22 14:52:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2047. [2021-12-22 14:52:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 1466 states have (on average 1.304911323328786) internal successors, (1913), 1483 states have internal predecessors, (1913), 451 states have call successors, (451), 130 states have call predecessors, (451), 129 states have return successors, (449), 445 states have call predecessors, (449), 449 states have call successors, (449) [2021-12-22 14:52:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2813 transitions. [2021-12-22 14:52:32,025 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2813 transitions. Word has length 281 [2021-12-22 14:52:32,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:32,025 INFO L470 AbstractCegarLoop]: Abstraction has 2047 states and 2813 transitions. [2021-12-22 14:52:32,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.4) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-22 14:52:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2813 transitions. [2021-12-22 14:52:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-22 14:52:32,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:32,032 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:32,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 14:52:32,249 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,SelfDestructingSolverStorable6 [2021-12-22 14:52:32,249 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:32,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:32,250 INFO L85 PathProgramCache]: Analyzing trace with hash 510727518, now seen corresponding path program 1 times [2021-12-22 14:52:32,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:32,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905059542] [2021-12-22 14:52:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:32,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:52:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 14:52:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 14:52:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 14:52:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:52:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:52:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 14:52:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 14:52:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:52:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-22 14:52:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-22 14:52:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-22 14:52:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-22 14:52:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-22 14:52:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 10 proven. 91 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2021-12-22 14:52:32,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:32,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905059542] [2021-12-22 14:52:32,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905059542] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:52:32,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413452113] [2021-12-22 14:52:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:32,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:32,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:32,656 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) [2021-12-22 14:52:32,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:52:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:33,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 14:52:33,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:52:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 351 proven. 1 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2021-12-22 14:52:33,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:52:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 10 proven. 91 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2021-12-22 14:52:34,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413452113] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:52:34,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:52:34,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-12-22 14:52:34,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049736575] [2021-12-22 14:52:34,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:52:34,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 14:52:34,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:34,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 14:52:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:52:34,414 INFO L87 Difference]: Start difference. First operand 2047 states and 2813 transitions. Second operand has 17 states, 15 states have (on average 9.0) internal successors, (135), 13 states have internal predecessors, (135), 4 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2021-12-22 14:52:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:35,781 INFO L93 Difference]: Finished difference Result 4249 states and 5992 transitions. [2021-12-22 14:52:35,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 14:52:35,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 9.0) internal successors, (135), 13 states have internal predecessors, (135), 4 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 292 [2021-12-22 14:52:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:35,805 INFO L225 Difference]: With dead ends: 4249 [2021-12-22 14:52:35,805 INFO L226 Difference]: Without dead ends: 2206 [2021-12-22 14:52:35,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 655 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2021-12-22 14:52:35,828 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 296 mSDsluCounter, 6173 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 6909 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:35,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 6909 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 14:52:35,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-12-22 14:52:35,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2066. [2021-12-22 14:52:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1480 states have (on average 1.3027027027027027) internal successors, (1928), 1497 states have internal predecessors, (1928), 453 states have call successors, (453), 133 states have call predecessors, (453), 132 states have return successors, (451), 447 states have call predecessors, (451), 451 states have call successors, (451) [2021-12-22 14:52:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 2832 transitions. [2021-12-22 14:52:35,920 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 2832 transitions. Word has length 292 [2021-12-22 14:52:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:35,920 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 2832 transitions. [2021-12-22 14:52:35,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 9.0) internal successors, (135), 13 states have internal predecessors, (135), 4 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2021-12-22 14:52:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 2832 transitions. [2021-12-22 14:52:35,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-12-22 14:52:35,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:35,928 INFO L514 BasicCegarLoop]: trace histogram [21, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:35,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 14:52:36,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:36,152 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:36,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1037858016, now seen corresponding path program 2 times [2021-12-22 14:52:36,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:36,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538821342] [2021-12-22 14:52:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:36,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:52:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:52:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 14:52:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:52:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 14:52:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:52:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 14:52:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 14:52:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-22 14:52:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-22 14:52:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-22 14:52:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-22 14:52:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-22 14:52:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-22 14:52:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 12 proven. 138 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2021-12-22 14:52:36,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538821342] [2021-12-22 14:52:36,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538821342] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:52:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361192294] [2021-12-22 14:52:36,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 14:52:36,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:36,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:36,725 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) [2021-12-22 14:52:36,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 14:52:37,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 14:52:37,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:52:37,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-22 14:52:37,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:52:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 415 proven. 5 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2021-12-22 14:52:38,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:52:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 12 proven. 138 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2021-12-22 14:52:39,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361192294] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:52:39,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:52:39,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 8] total 22 [2021-12-22 14:52:39,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206374055] [2021-12-22 14:52:39,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:52:39,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-22 14:52:39,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:39,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-22 14:52:39,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-12-22 14:52:39,367 INFO L87 Difference]: Start difference. First operand 2066 states and 2832 transitions. Second operand has 22 states, 20 states have (on average 7.15) internal successors, (143), 18 states have internal predecessors, (143), 4 states have call successors, (64), 6 states have call predecessors, (64), 8 states have return successors, (45), 5 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-22 14:52:41,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:41,073 INFO L93 Difference]: Finished difference Result 4270 states and 6007 transitions. [2021-12-22 14:52:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 14:52:41,074 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 7.15) internal successors, (143), 18 states have internal predecessors, (143), 4 states have call successors, (64), 6 states have call predecessors, (64), 8 states have return successors, (45), 5 states have call predecessors, (45), 4 states have call successors, (45) Word has length 302 [2021-12-22 14:52:41,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:41,091 INFO L225 Difference]: With dead ends: 4270 [2021-12-22 14:52:41,091 INFO L226 Difference]: Without dead ends: 2210 [2021-12-22 14:52:41,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 674 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2021-12-22 14:52:41,099 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 301 mSDsluCounter, 6748 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 7478 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:41,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 7478 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 14:52:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2021-12-22 14:52:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 2070. [2021-12-22 14:52:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1484 states have (on average 1.3018867924528301) internal successors, (1932), 1501 states have internal predecessors, (1932), 453 states have call successors, (453), 133 states have call predecessors, (453), 132 states have return successors, (451), 447 states have call predecessors, (451), 451 states have call successors, (451) [2021-12-22 14:52:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2836 transitions. [2021-12-22 14:52:41,173 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2836 transitions. Word has length 302 [2021-12-22 14:52:41,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:41,173 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 2836 transitions. [2021-12-22 14:52:41,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 7.15) internal successors, (143), 18 states have internal predecessors, (143), 4 states have call successors, (64), 6 states have call predecessors, (64), 8 states have return successors, (45), 5 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-22 14:52:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2836 transitions. [2021-12-22 14:52:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-12-22 14:52:41,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:41,178 INFO L514 BasicCegarLoop]: trace histogram [31, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:41,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 14:52:41,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:41,403 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1729942178, now seen corresponding path program 3 times [2021-12-22 14:52:41,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:41,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081800696] [2021-12-22 14:52:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:41,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:52:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 14:52:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:52:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:52:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:52:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 14:52:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 14:52:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 14:52:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 14:52:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-22 14:52:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-22 14:52:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-22 14:52:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-22 14:52:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-22 14:52:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 14 proven. 204 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2021-12-22 14:52:42,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:42,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081800696] [2021-12-22 14:52:42,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081800696] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:52:42,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709458252] [2021-12-22 14:52:42,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 14:52:42,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:42,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:42,004 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:52:42,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 14:52:44,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-22 14:52:44,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:52:44,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 14:52:44,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:52:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 338 proven. 6 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2021-12-22 14:52:45,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:52:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 212 proven. 6 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2021-12-22 14:52:45,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709458252] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:52:45,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:52:45,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 24 [2021-12-22 14:52:45,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751897413] [2021-12-22 14:52:45,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:52:45,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 14:52:45,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 14:52:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-12-22 14:52:45,972 INFO L87 Difference]: Start difference. First operand 2070 states and 2836 transitions. Second operand has 24 states, 22 states have (on average 6.590909090909091) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (54), 6 states have call predecessors, (54), 7 states have return successors, (43), 5 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-22 14:52:48,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:48,013 INFO L93 Difference]: Finished difference Result 4278 states and 6015 transitions. [2021-12-22 14:52:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 14:52:48,013 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 6.590909090909091) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (54), 6 states have call predecessors, (54), 7 states have return successors, (43), 5 states have call predecessors, (43), 4 states have call successors, (43) Word has length 312 [2021-12-22 14:52:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:48,022 INFO L225 Difference]: With dead ends: 4278 [2021-12-22 14:52:48,023 INFO L226 Difference]: Without dead ends: 2214 [2021-12-22 14:52:48,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 690 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=272, Invalid=1534, Unknown=0, NotChecked=0, Total=1806 [2021-12-22 14:52:48,030 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 305 mSDsluCounter, 9936 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 10679 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:48,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 10679 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-22 14:52:48,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-12-22 14:52:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2074. [2021-12-22 14:52:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 1488 states have (on average 1.3010752688172043) internal successors, (1936), 1505 states have internal predecessors, (1936), 453 states have call successors, (453), 133 states have call predecessors, (453), 132 states have return successors, (451), 447 states have call predecessors, (451), 451 states have call successors, (451) [2021-12-22 14:52:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2840 transitions. [2021-12-22 14:52:48,112 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2840 transitions. Word has length 312 [2021-12-22 14:52:48,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:48,112 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 2840 transitions. [2021-12-22 14:52:48,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 6.590909090909091) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (54), 6 states have call predecessors, (54), 7 states have return successors, (43), 5 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-22 14:52:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2840 transitions. [2021-12-22 14:52:48,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-12-22 14:52:48,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:48,117 INFO L514 BasicCegarLoop]: trace histogram [41, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:48,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 14:52:48,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 14:52:48,335 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:48,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1494093216, now seen corresponding path program 4 times [2021-12-22 14:52:48,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:48,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260570232] [2021-12-22 14:52:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:48,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:52:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 14:52:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:52:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 14:52:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:52:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 14:52:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 14:52:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-22 14:52:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-22 14:52:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-22 14:52:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-22 14:52:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-22 14:52:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-22 14:52:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-22 14:52:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 16 proven. 289 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2021-12-22 14:52:48,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:48,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260570232] [2021-12-22 14:52:48,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260570232] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:52:48,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412668840] [2021-12-22 14:52:48,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 14:52:48,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:48,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:48,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:52:48,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 14:52:50,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 14:52:50,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:52:50,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-22 14:52:50,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:52:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 1181 proven. 13 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-12-22 14:52:51,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:52:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 140 proven. 165 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2021-12-22 14:52:51,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412668840] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:52:51,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:52:51,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-12-22 14:52:51,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393853482] [2021-12-22 14:52:51,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:52:51,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 14:52:51,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 14:52:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-12-22 14:52:51,969 INFO L87 Difference]: Start difference. First operand 2074 states and 2840 transitions. Second operand has 24 states, 22 states have (on average 6.636363636363637) internal successors, (146), 20 states have internal predecessors, (146), 4 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-22 14:52:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:54,024 INFO L93 Difference]: Finished difference Result 4298 states and 6040 transitions. [2021-12-22 14:52:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-22 14:52:54,025 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 6.636363636363637) internal successors, (146), 20 states have internal predecessors, (146), 4 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) Word has length 322 [2021-12-22 14:52:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:54,036 INFO L225 Difference]: With dead ends: 4298 [2021-12-22 14:52:54,036 INFO L226 Difference]: Without dead ends: 2235 [2021-12-22 14:52:54,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 711 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=333, Invalid=1923, Unknown=0, NotChecked=0, Total=2256 [2021-12-22 14:52:54,044 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 308 mSDsluCounter, 7940 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 8683 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:54,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 8683 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 14:52:54,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2021-12-22 14:52:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2095. [2021-12-22 14:52:54,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 1507 states have (on average 1.3005972130059722) internal successors, (1960), 1524 states have internal predecessors, (1960), 453 states have call successors, (453), 135 states have call predecessors, (453), 134 states have return successors, (451), 447 states have call predecessors, (451), 451 states have call successors, (451) [2021-12-22 14:52:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2864 transitions. [2021-12-22 14:52:54,192 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2864 transitions. Word has length 322 [2021-12-22 14:52:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:54,192 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 2864 transitions. [2021-12-22 14:52:54,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 6.636363636363637) internal successors, (146), 20 states have internal predecessors, (146), 4 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-22 14:52:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2864 transitions. [2021-12-22 14:52:54,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-12-22 14:52:54,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:54,199 INFO L514 BasicCegarLoop]: trace histogram [47, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:54,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-22 14:52:54,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:54,419 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:54,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1461902608, now seen corresponding path program 5 times [2021-12-22 14:52:54,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:54,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911261293] [2021-12-22 14:52:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:54,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:52:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:52:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:52:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 14:52:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:52:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:52:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 14:52:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 14:52:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-22 14:52:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-22 14:52:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-22 14:52:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-22 14:52:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-22 14:52:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-22 14:52:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-22 14:52:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-22 14:52:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 18 proven. 369 refuted. 0 times theorem prover too weak. 1925 trivial. 0 not checked. [2021-12-22 14:52:54,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:54,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911261293] [2021-12-22 14:52:54,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911261293] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:52:54,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349268303] [2021-12-22 14:52:54,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 14:52:54,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:52:54,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:54,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:52:55,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 14:53:00,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-22 14:53:00,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:53:00,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-22 14:53:00,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:53:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 994 proven. 15 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2021-12-22 14:53:00,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:53:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 60 proven. 327 refuted. 0 times theorem prover too weak. 1925 trivial. 0 not checked. [2021-12-22 14:53:01,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349268303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:53:01,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:53:01,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 26 [2021-12-22 14:53:01,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583601419] [2021-12-22 14:53:01,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:53:01,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 14:53:01,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:53:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 14:53:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-12-22 14:53:01,581 INFO L87 Difference]: Start difference. First operand 2095 states and 2864 transitions. Second operand has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 4 states have call successors, (63), 6 states have call predecessors, (63), 6 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-22 14:53:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:53:03,381 INFO L93 Difference]: Finished difference Result 4328 states and 6067 transitions. [2021-12-22 14:53:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-22 14:53:03,382 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 4 states have call successors, (63), 6 states have call predecessors, (63), 6 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) Word has length 328 [2021-12-22 14:53:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:53:03,391 INFO L225 Difference]: With dead ends: 4328 [2021-12-22 14:53:03,391 INFO L226 Difference]: Without dead ends: 2240 [2021-12-22 14:53:03,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 722 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=388, Invalid=2368, Unknown=0, NotChecked=0, Total=2756 [2021-12-22 14:53:03,397 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 314 mSDsluCounter, 9119 mSDsCounter, 0 mSdLazyCounter, 2136 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 9850 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 2136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:53:03,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 9850 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 2136 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 14:53:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-12-22 14:53:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2100. [2021-12-22 14:53:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 1512 states have (on average 1.2996031746031746) internal successors, (1965), 1529 states have internal predecessors, (1965), 453 states have call successors, (453), 135 states have call predecessors, (453), 134 states have return successors, (451), 447 states have call predecessors, (451), 451 states have call successors, (451) [2021-12-22 14:53:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2869 transitions. [2021-12-22 14:53:03,468 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2869 transitions. Word has length 328 [2021-12-22 14:53:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:53:03,468 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 2869 transitions. [2021-12-22 14:53:03,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 4 states have call successors, (63), 6 states have call predecessors, (63), 6 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-22 14:53:03,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2869 transitions. [2021-12-22 14:53:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-12-22 14:53:03,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:53:03,473 INFO L514 BasicCegarLoop]: trace histogram [53, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:53:03,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 14:53:03,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:53:03,684 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:53:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:53:03,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1477800032, now seen corresponding path program 6 times [2021-12-22 14:53:03,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:53:03,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275021690] [2021-12-22 14:53:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:53:03,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:53:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:53:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:53:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:53:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:53:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:53:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:03,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 14:53:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 14:53:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 14:53:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 14:53:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 14:53:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-22 14:53:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-22 14:53:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-22 14:53:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-22 14:53:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-22 14:53:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-22 14:53:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-22 14:53:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-22 14:53:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 20 proven. 460 refuted. 0 times theorem prover too weak. 2195 trivial. 0 not checked. [2021-12-22 14:53:04,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:53:04,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275021690] [2021-12-22 14:53:04,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275021690] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:53:04,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997158279] [2021-12-22 14:53:04,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-22 14:53:04,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:53:04,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:53:04,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:53:04,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process