./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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/uthash-2.0.2/uthash_OAT_test1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:01:27,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:01:27,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:01:27,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:01:27,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:01:27,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:01:27,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:01:27,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:01:27,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:01:27,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:01:27,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:01:27,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:01:27,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:01:27,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:01:27,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:01:27,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:01:27,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:01:27,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:01:27,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:01:27,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:01:27,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:01:27,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:01:27,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:01:27,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:01:27,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:01:27,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:01:27,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:01:27,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:01:27,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:01:27,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:01:27,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:01:27,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:01:27,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:01:27,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:01:27,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:01:27,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:01:27,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:01:27,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:01:27,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:01:27,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:01:27,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:01:27,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:01:27,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:01:27,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:01:27,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:01:27,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:01:27,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:01:27,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:01:27,978 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:01:27,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:01:27,978 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:01:27,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:01:27,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:01:27,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:01:27,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:01:27,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:01:27,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:01:27,980 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:01:27,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:01:27,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:01:27,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:01:27,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:01:27,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:01:27,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:01:27,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:01:27,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:01:27,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:01:27,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:01:27,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:01:27,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:01:27,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:01:27,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:01:27,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:01:27,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:01:27,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 [2021-11-07 22:01:28,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:01:28,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:01:28,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:01:28,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:01:28,198 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:01:28,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2021-11-07 22:01:28,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32537548d/426545b50b0a438594baeb7888202501/FLAG25bd7d5ae [2021-11-07 22:01:28,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:01:28,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2021-11-07 22:01:28,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32537548d/426545b50b0a438594baeb7888202501/FLAG25bd7d5ae [2021-11-07 22:01:28,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32537548d/426545b50b0a438594baeb7888202501 [2021-11-07 22:01:28,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:01:28,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:01:28,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:01:28,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:01:28,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:01:28,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:01:28" (1/1) ... [2021-11-07 22:01:28,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c48d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:28, skipping insertion in model container [2021-11-07 22:01:28,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:01:28" (1/1) ... [2021-11-07 22:01:28,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:01:29,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:01:29,319 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i[33021,33034] [2021-11-07 22:01:29,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:01:29,409 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:01:29,428 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i[33021,33034] [2021-11-07 22:01:29,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:01:29,484 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:01:29,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29 WrapperNode [2021-11-07 22:01:29,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:01:29,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:01:29,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:01:29,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:01:29,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:01:29,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:01:29,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:01:29,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:01:29,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:01:29,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:01:29,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:01:29,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:01:29,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (1/1) ... [2021-11-07 22:01:29,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:01:29,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:01:29,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 22:01:29,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 22:01:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:01:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:01:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:01:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:01:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:01:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:01:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:01:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:01:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:01:29,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:01:30,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:01:30,370 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-07 22:01:30,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:01:30 BoogieIcfgContainer [2021-11-07 22:01:30,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:01:30,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:01:30,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:01:30,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:01:30,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:01:28" (1/3) ... [2021-11-07 22:01:30,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b2365f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:01:30, skipping insertion in model container [2021-11-07 22:01:30,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:01:29" (2/3) ... [2021-11-07 22:01:30,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b2365f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:01:30, skipping insertion in model container [2021-11-07 22:01:30,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:01:30" (3/3) ... [2021-11-07 22:01:30,377 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-1.i [2021-11-07 22:01:30,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:01:30,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 22:01:30,408 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:01:30,412 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 22:01:30,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 22:01:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 137 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:01:30,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:01:30,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:01:30,426 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:01:30,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:01:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-07 22:01:30,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:01:30,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444481133] [2021-11-07 22:01:30,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:30,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:01:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:01:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:01:30,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:01:30,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444481133] [2021-11-07 22:01:30,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444481133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:01:30,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:01:30,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:01:30,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686917765] [2021-11-07 22:01:30,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:01:30,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:01:30,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:01:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:01:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:01:30,546 INFO L87 Difference]: Start difference. First operand has 138 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 137 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:01:30,575 INFO L93 Difference]: Finished difference Result 274 states and 440 transitions. [2021-11-07 22:01:30,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:01:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 22:01:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:01:30,592 INFO L225 Difference]: With dead ends: 274 [2021-11-07 22:01:30,592 INFO L226 Difference]: Without dead ends: 134 [2021-11-07 22:01:30,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:01:30,599 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:01:30,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 3.33ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:01:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-07 22:01:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-07 22:01:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 133 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2021-11-07 22:01:30,643 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 8 [2021-11-07 22:01:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:01:30,644 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2021-11-07 22:01:30,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2021-11-07 22:01:30,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:01:30,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:01:30,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:01:30,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:01:30,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:01:30,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:01:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-07 22:01:30,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:01:30,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288467042] [2021-11-07 22:01:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:30,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:01:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:01:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:01:30,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:01:30,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288467042] [2021-11-07 22:01:30,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288467042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:01:30,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:01:30,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:01:30,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253686966] [2021-11-07 22:01:30,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:01:30,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:01:30,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:01:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:01:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:01:30,713 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:01:30,745 INFO L93 Difference]: Finished difference Result 266 states and 342 transitions. [2021-11-07 22:01:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:01:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 22:01:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:01:30,749 INFO L225 Difference]: With dead ends: 266 [2021-11-07 22:01:30,749 INFO L226 Difference]: Without dead ends: 221 [2021-11-07 22:01:30,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:01:30,750 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 113 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.13ms IncrementalHoareTripleChecker+Time [2021-11-07 22:01:30,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 12.13ms Time] [2021-11-07 22:01:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-07 22:01:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 135. [2021-11-07 22:01:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 125 states have (on average 1.384) internal successors, (173), 134 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 173 transitions. [2021-11-07 22:01:30,763 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 173 transitions. Word has length 8 [2021-11-07 22:01:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:01:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 173 transitions. [2021-11-07 22:01:30,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2021-11-07 22:01:30,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:01:30,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:01:30,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:01:30,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 22:01:30,768 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:01:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:01:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash -781067853, now seen corresponding path program 1 times [2021-11-07 22:01:30,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:01:30,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558965610] [2021-11-07 22:01:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:30,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:01:30,783 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:01:30,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252872343] [2021-11-07 22:01:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:30,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:30,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:01:30,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:01:30,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 22:01:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:01:30,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:01:30,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:01:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:01:31,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:01:31,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:01:31,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558965610] [2021-11-07 22:01:31,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:01:31,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252872343] [2021-11-07 22:01:31,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252872343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:01:31,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:01:31,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:01:31,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386927958] [2021-11-07 22:01:31,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:01:31,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:01:31,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:01:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:01:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:01:31,024 INFO L87 Difference]: Start difference. First operand 135 states and 173 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:01:31,071 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-07 22:01:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:01:31,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 22:01:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:01:31,073 INFO L225 Difference]: With dead ends: 288 [2021-11-07 22:01:31,073 INFO L226 Difference]: Without dead ends: 156 [2021-11-07 22:01:31,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:01:31,074 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.16ms IncrementalHoareTripleChecker+Time [2021-11-07 22:01:31,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 289 Invalid, 72 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 41.16ms Time] [2021-11-07 22:01:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-07 22:01:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-07 22:01:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 154 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2021-11-07 22:01:31,085 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 59 [2021-11-07 22:01:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:01:31,085 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2021-11-07 22:01:31,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2021-11-07 22:01:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:01:31,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:01:31,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:01:31,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 22:01:31,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:31,305 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:01:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:01:31,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1269877969, now seen corresponding path program 1 times [2021-11-07 22:01:31,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:01:31,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400954010] [2021-11-07 22:01:31,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:31,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:01:31,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:01:31,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526135336] [2021-11-07 22:01:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:31,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:31,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:01:31,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:01:31,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 22:01:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:01:31,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:01:31,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:01:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:01:31,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:01:31,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:01:31,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400954010] [2021-11-07 22:01:31,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:01:31,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526135336] [2021-11-07 22:01:31,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526135336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:01:31,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:01:31,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:01:31,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087539345] [2021-11-07 22:01:31,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:01:31,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:01:31,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:01:31,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:01:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:01:31,593 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:01:31,646 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2021-11-07 22:01:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:01:31,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 22:01:31,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:01:31,647 INFO L225 Difference]: With dead ends: 299 [2021-11-07 22:01:31,648 INFO L226 Difference]: Without dead ends: 147 [2021-11-07 22:01:31,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:01:31,649 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 160 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.12ms IncrementalHoareTripleChecker+Time [2021-11-07 22:01:31,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 297 Invalid, 66 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 43.12ms Time] [2021-11-07 22:01:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-07 22:01:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2021-11-07 22:01:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 140 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-11-07 22:01:31,654 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 59 [2021-11-07 22:01:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:01:31,655 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-11-07 22:01:31,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-11-07 22:01:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:01:31,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:01:31,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:01:31,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 22:01:31,862 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,SelfDestructingSolverStorable3 [2021-11-07 22:01:31,863 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:01:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:01:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1890386365, now seen corresponding path program 1 times [2021-11-07 22:01:31,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:01:31,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859281658] [2021-11-07 22:01:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:31,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:01:31,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:01:31,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630497411] [2021-11-07 22:01:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:31,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:31,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:01:31,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:01:31,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 22:01:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:01:31,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:01:31,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:01:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:01:32,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:01:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:01:32,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:01:32,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859281658] [2021-11-07 22:01:32,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:01:32,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630497411] [2021-11-07 22:01:32,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630497411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:01:32,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:01:32,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 22:01:32,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123521004] [2021-11-07 22:01:32,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:01:32,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:01:32,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:01:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:01:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:01:32,210 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:01:32,236 INFO L93 Difference]: Finished difference Result 465 states and 569 transitions. [2021-11-07 22:01:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 22:01:32,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 22:01:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:01:32,238 INFO L225 Difference]: With dead ends: 465 [2021-11-07 22:01:32,238 INFO L226 Difference]: Without dead ends: 420 [2021-11-07 22:01:32,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.80ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:01:32,239 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 592 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.27ms IncrementalHoareTripleChecker+Time [2021-11-07 22:01:32,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 586 Invalid, 19 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 14.27ms Time] [2021-11-07 22:01:32,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-07 22:01:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2021-11-07 22:01:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 410 states have (on average 1.2463414634146341) internal successors, (511), 419 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 511 transitions. [2021-11-07 22:01:32,250 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 511 transitions. Word has length 59 [2021-11-07 22:01:32,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:01:32,250 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 511 transitions. [2021-11-07 22:01:32,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 511 transitions. [2021-11-07 22:01:32,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-07 22:01:32,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:01:32,253 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:01:32,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 22:01:32,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:32,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:01:32,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:01:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 292771206, now seen corresponding path program 2 times [2021-11-07 22:01:32,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:01:32,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942146972] [2021-11-07 22:01:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:32,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:01:32,512 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:01:32,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833168554] [2021-11-07 22:01:32,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:01:32,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:32,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:01:32,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:01:32,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 22:01:32,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:01:32,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:01:32,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 22:01:32,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:01:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-07 22:01:33,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:01:33,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:01:33,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942146972] [2021-11-07 22:01:33,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:01:33,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833168554] [2021-11-07 22:01:33,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833168554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:01:33,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:01:33,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:01:33,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420942493] [2021-11-07 22:01:33,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:01:33,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:01:33,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:01:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:01:33,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:01:33,514 INFO L87 Difference]: Start difference. First operand 420 states and 511 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:33,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:01:33,626 INFO L93 Difference]: Finished difference Result 782 states and 956 transitions. [2021-11-07 22:01:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:01:33,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2021-11-07 22:01:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:01:33,628 INFO L225 Difference]: With dead ends: 782 [2021-11-07 22:01:33,628 INFO L226 Difference]: Without dead ends: 418 [2021-11-07 22:01:33,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.54ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:01:33,629 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 19 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.85ms IncrementalHoareTripleChecker+Time [2021-11-07 22:01:33,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 443 Invalid, 42 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 101.85ms Time] [2021-11-07 22:01:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-07 22:01:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-11-07 22:01:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 408 states have (on average 1.2450980392156863) internal successors, (508), 417 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 508 transitions. [2021-11-07 22:01:33,640 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 508 transitions. Word has length 212 [2021-11-07 22:01:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:01:33,655 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 508 transitions. [2021-11-07 22:01:33,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 508 transitions. [2021-11-07 22:01:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 22:01:33,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:01:33,663 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:01:33,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 22:01:33,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:33,896 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:01:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:01:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash -202059402, now seen corresponding path program 1 times [2021-11-07 22:01:33,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:01:33,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276271063] [2021-11-07 22:01:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:33,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:01:33,921 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:01:33,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79964960] [2021-11-07 22:01:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:33,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:01:33,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:01:33,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 22:01:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:01:34,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 22:01:34,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:01:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:01:34,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:01:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:01:34,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:01:34,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276271063] [2021-11-07 22:01:34,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:01:34,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79964960] [2021-11-07 22:01:34,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79964960] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:01:34,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:01:34,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 22:01:34,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157788675] [2021-11-07 22:01:34,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:01:34,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 22:01:34,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:01:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 22:01:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:01:34,829 INFO L87 Difference]: Start difference. First operand 418 states and 508 transitions. Second operand has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:01:34,917 INFO L93 Difference]: Finished difference Result 1021 states and 1247 transitions. [2021-11-07 22:01:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 22:01:34,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2021-11-07 22:01:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:01:34,923 INFO L225 Difference]: With dead ends: 1021 [2021-11-07 22:01:34,923 INFO L226 Difference]: Without dead ends: 976 [2021-11-07 22:01:34,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.51ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:01:34,924 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 2015 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.15ms IncrementalHoareTripleChecker+Time [2021-11-07 22:01:34,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 1154 Invalid, 40 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 37.15ms Time] [2021-11-07 22:01:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-07 22:01:34,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 976. [2021-11-07 22:01:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 966 states have (on average 1.2277432712215322) internal successors, (1186), 975 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1186 transitions. [2021-11-07 22:01:34,941 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1186 transitions. Word has length 219 [2021-11-07 22:01:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:01:34,943 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1186 transitions. [2021-11-07 22:01:34,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:01:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1186 transitions. [2021-11-07 22:01:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-11-07 22:01:34,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:01:34,949 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:01:34,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 22:01:35,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:35,166 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:01:35,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:01:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1985764010, now seen corresponding path program 2 times [2021-11-07 22:01:35,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:01:35,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960180073] [2021-11-07 22:01:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:01:35,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:01:35,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:01:35,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115968897] [2021-11-07 22:01:35,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:01:35,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:01:35,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:01:35,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:01:35,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 22:02:05,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:02:05,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:02:05,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 22:02:05,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:02:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:02:06,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:02:06,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:02:06,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960180073] [2021-11-07 22:02:06,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:02:06,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115968897] [2021-11-07 22:02:06,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115968897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:02:06,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:02:06,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:02:06,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799062934] [2021-11-07 22:02:06,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:02:06,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:02:06,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:02:06,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:02:06,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:02:06,478 INFO L87 Difference]: Start difference. First operand 976 states and 1186 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:02:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:02:06,501 INFO L93 Difference]: Finished difference Result 1909 states and 2332 transitions. [2021-11-07 22:02:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:02:06,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 525 [2021-11-07 22:02:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:02:06,505 INFO L225 Difference]: With dead ends: 1909 [2021-11-07 22:02:06,505 INFO L226 Difference]: Without dead ends: 986 [2021-11-07 22:02:06,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:02:06,506 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.61ms IncrementalHoareTripleChecker+Time [2021-11-07 22:02:06,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 10.61ms Time] [2021-11-07 22:02:06,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-07 22:02:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2021-11-07 22:02:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 976 states have (on average 1.2254098360655739) internal successors, (1196), 985 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:02:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1196 transitions. [2021-11-07 22:02:06,524 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1196 transitions. Word has length 525 [2021-11-07 22:02:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:02:06,524 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1196 transitions. [2021-11-07 22:02:06,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:02:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1196 transitions. [2021-11-07 22:02:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-11-07 22:02:06,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:02:06,530 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:02:06,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:02:06,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:02:06,743 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:02:06,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:02:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1773801099, now seen corresponding path program 1 times [2021-11-07 22:02:06,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:02:06,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249024211] [2021-11-07 22:02:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:02:06,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:02:06,772 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:02:06,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073048634] [2021-11-07 22:02:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:02:06,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:02:06,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:02:06,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:02:06,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 22:06:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:06:31,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:06:31,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:06:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2288 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-07 22:06:31,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:06:31,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:06:31,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249024211] [2021-11-07 22:06:31,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:06:31,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073048634] [2021-11-07 22:06:31,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073048634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:06:31,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:06:31,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:06:31,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651085914] [2021-11-07 22:06:31,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:06:31,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:06:31,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:06:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:06:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:06:31,739 INFO L87 Difference]: Start difference. First operand 986 states and 1196 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:06:31,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:06:31,761 INFO L93 Difference]: Finished difference Result 1932 states and 2356 transitions. [2021-11-07 22:06:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:06:31,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 526 [2021-11-07 22:06:31,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:06:31,765 INFO L225 Difference]: With dead ends: 1932 [2021-11-07 22:06:31,765 INFO L226 Difference]: Without dead ends: 996 [2021-11-07 22:06:31,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:06:31,767 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.52ms IncrementalHoareTripleChecker+Time [2021-11-07 22:06:31,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.39ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 11.52ms Time] [2021-11-07 22:06:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-07 22:06:31,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2021-11-07 22:06:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 986 states have (on average 1.2231237322515214) internal successors, (1206), 995 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:06:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1206 transitions. [2021-11-07 22:06:31,784 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1206 transitions. Word has length 526 [2021-11-07 22:06:31,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:06:31,784 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1206 transitions. [2021-11-07 22:06:31,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:06:31,784 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1206 transitions. [2021-11-07 22:06:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2021-11-07 22:06:31,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:06:31,790 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:06:31,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 22:06:32,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:06:32,020 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:06:32,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:06:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1577277749, now seen corresponding path program 1 times [2021-11-07 22:06:32,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:06:32,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050180209] [2021-11-07 22:06:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:06:32,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:06:32,053 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:06:32,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065031288] [2021-11-07 22:06:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:06:32,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:06:32,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:06:32,059 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:06:32,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 22:10:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:10:03,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 22:10:03,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:10:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:10:04,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:10:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 1 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-07 22:10:05,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:10:05,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050180209] [2021-11-07 22:10:05,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:10:05,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065031288] [2021-11-07 22:10:05,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065031288] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:10:05,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:10:05,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2021-11-07 22:10:05,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526703533] [2021-11-07 22:10:05,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:10:05,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 22:10:05,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:10:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 22:10:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 22:10:05,288 INFO L87 Difference]: Start difference. First operand 996 states and 1206 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:10:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:10:05,381 INFO L93 Difference]: Finished difference Result 3675 states and 4493 transitions. [2021-11-07 22:10:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 22:10:05,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 527 [2021-11-07 22:10:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:10:05,388 INFO L225 Difference]: With dead ends: 3675 [2021-11-07 22:10:05,388 INFO L226 Difference]: Without dead ends: 2730 [2021-11-07 22:10:05,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 42.11ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-07 22:10:05,390 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 302 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.49ms IncrementalHoareTripleChecker+Time [2021-11-07 22:10:05,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1844 Invalid, 74 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 41.49ms Time] [2021-11-07 22:10:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-07 22:10:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 1036. [2021-11-07 22:10:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1026 states have (on average 1.2144249512670566) internal successors, (1246), 1035 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:10:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1246 transitions. [2021-11-07 22:10:05,414 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1246 transitions. Word has length 527 [2021-11-07 22:10:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:10:05,415 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1246 transitions. [2021-11-07 22:10:05,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:10:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1246 transitions. [2021-11-07 22:10:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-11-07 22:10:05,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:10:05,418 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:10:05,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 22:10:05,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 22:10:05,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:10:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:10:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1316590250, now seen corresponding path program 2 times [2021-11-07 22:10:05,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:10:05,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669071433] [2021-11-07 22:10:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:10:05,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:10:05,665 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:10:05,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904007703] [2021-11-07 22:10:05,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:10:05,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:10:05,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:10:05,667 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:10:05,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 22:10:18,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:10:18,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:10:18,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 22:10:18,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:10:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 13 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:10:19,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:10:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 10 refuted. 0 times theorem prover too weak. 1965 trivial. 0 not checked. [2021-11-07 22:10:20,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:10:20,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669071433] [2021-11-07 22:10:20,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:10:20,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904007703] [2021-11-07 22:10:20,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904007703] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:10:20,128 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:10:20,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2021-11-07 22:10:20,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383142450] [2021-11-07 22:10:20,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:10:20,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 22:10:20,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:10:20,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 22:10:20,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-07 22:10:20,130 INFO L87 Difference]: Start difference. First operand 1036 states and 1246 transitions. Second operand has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:10:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:10:21,142 INFO L93 Difference]: Finished difference Result 2984 states and 3716 transitions. [2021-11-07 22:10:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 22:10:21,143 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 531 [2021-11-07 22:10:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:10:21,147 INFO L225 Difference]: With dead ends: 2984 [2021-11-07 22:10:21,148 INFO L226 Difference]: Without dead ends: 1956 [2021-11-07 22:10:21,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 735.26ms TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-11-07 22:10:21,149 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 809 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 283.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.67ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 338.72ms IncrementalHoareTripleChecker+Time [2021-11-07 22:10:21,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2470 Invalid, 573 Unknown, 0 Unchecked, 4.67ms Time], IncrementalHoareTripleChecker [74 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 338.72ms Time] [2021-11-07 22:10:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-11-07 22:10:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1146. [2021-11-07 22:10:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1136 states have (on average 1.193661971830986) internal successors, (1356), 1145 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:10:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1356 transitions. [2021-11-07 22:10:21,177 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1356 transitions. Word has length 531 [2021-11-07 22:10:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:10:21,178 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1356 transitions. [2021-11-07 22:10:21,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:10:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1356 transitions. [2021-11-07 22:10:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2021-11-07 22:10:21,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:10:21,181 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:10:21,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 22:10:21,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:10:21,399 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:10:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:10:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2034509196, now seen corresponding path program 3 times [2021-11-07 22:10:21,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:10:21,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574852280] [2021-11-07 22:10:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:10:21,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:10:21,430 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:10:21,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252081820] [2021-11-07 22:10:21,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 22:10:21,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:10:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:10:21,433 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:10:21,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process Killed by 15