./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/tree-4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/heap-manipulation/tree-4.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 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:59:01,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:59:01,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:59:01,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:59:01,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:59:01,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:59:01,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:59:01,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:59:01,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:59:01,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:59:01,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:59:01,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:59:01,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:59:01,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:59:01,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:59:01,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:59:01,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:59:01,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:59:01,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:59:01,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:59:01,959 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:59:01,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:59:01,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:59:01,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:59:01,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:59:01,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:59:01,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:59:01,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:59:01,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:59:01,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:59:01,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:59:01,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:59:01,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:59:01,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:59:01,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:59:01,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:59:01,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:59:01,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:59:01,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:59:01,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:59:01,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:59:01,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:59:01,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:59:01,995 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:59:01,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:59:01,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:59:01,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:59:01,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:59:01,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:59:01,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:59:01,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:59:01,998 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:59:01,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:59:01,998 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:59:01,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:59:01,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:59:01,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:59:01,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:59:01,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:59:02,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:59:02,000 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:59:02,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:59:02,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:59:02,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:59:02,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:59:02,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:59:02,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:59:02,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:59:02,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:59:02,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:59:02,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:59:02,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:59:02,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:59:02,003 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:59:02,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:59:02,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:59:02,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2022-07-21 01:59:02,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:59:02,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:59:02,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:59:02,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:59:02,342 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:59:02,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-21 01:59:02,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ce67ece/0a093873f8ac4971ae7c1e526eea93b6/FLAG34dc4460a [2022-07-21 01:59:02,968 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:59:02,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-21 01:59:02,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ce67ece/0a093873f8ac4971ae7c1e526eea93b6/FLAG34dc4460a [2022-07-21 01:59:03,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ce67ece/0a093873f8ac4971ae7c1e526eea93b6 [2022-07-21 01:59:03,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:59:03,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:59:03,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:59:03,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:59:03,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:59:03,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:03,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd970d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03, skipping insertion in model container [2022-07-21 01:59:03,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:03,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:59:03,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:59:03,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-07-21 01:59:03,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:59:03,821 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:59:03,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-07-21 01:59:03,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:59:03,909 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:59:03,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03 WrapperNode [2022-07-21 01:59:03,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:59:03,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:59:03,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:59:03,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:59:03,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:03,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:03,980 INFO L137 Inliner]: procedures = 122, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2022-07-21 01:59:03,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:59:03,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:59:03,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:59:03,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:59:03,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:03,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:04,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:04,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:04,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:04,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:04,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:04,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:59:04,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:59:04,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:59:04,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:59:04,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (1/1) ... [2022-07-21 01:59:04,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:59:04,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:59:04,077 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) [2022-07-21 01:59:04,105 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 [2022-07-21 01:59:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 01:59:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-21 01:59:04,125 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-21 01:59:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 01:59:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 01:59:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:59:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 01:59:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 01:59:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:59:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:59:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:59:04,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:59:04,279 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:59:04,280 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:59:04,552 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:59:04,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:59:04,558 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-21 01:59:04,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:59:04 BoogieIcfgContainer [2022-07-21 01:59:04,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:59:04,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:59:04,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:59:04,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:59:04,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:59:03" (1/3) ... [2022-07-21 01:59:04,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe3f0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:59:04, skipping insertion in model container [2022-07-21 01:59:04,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:03" (2/3) ... [2022-07-21 01:59:04,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe3f0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:59:04, skipping insertion in model container [2022-07-21 01:59:04,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:59:04" (3/3) ... [2022-07-21 01:59:04,567 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-4.i [2022-07-21 01:59:04,581 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:59:04,581 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:59:04,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:59:04,628 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@757a5f12, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d49b0c1 [2022-07-21 01:59:04,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:59:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 40 states have (on average 1.725) internal successors, (69), 44 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 01:59:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:59:04,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:04,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:04,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1979325632, now seen corresponding path program 1 times [2022-07-21 01:59:04,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:59:04,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758563658] [2022-07-21 01:59:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:04,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:59:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:04,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:59:04,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758563658] [2022-07-21 01:59:04,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758563658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:04,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:04,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:59:04,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175828484] [2022-07-21 01:59:04,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:04,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:59:04,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:59:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:59:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:59:04,806 INFO L87 Difference]: Start difference. First operand has 46 states, 40 states have (on average 1.725) internal successors, (69), 44 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:04,827 INFO L93 Difference]: Finished difference Result 88 states and 147 transitions. [2022-07-21 01:59:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:59:04,833 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-21 01:59:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:04,840 INFO L225 Difference]: With dead ends: 88 [2022-07-21 01:59:04,840 INFO L226 Difference]: Without dead ends: 31 [2022-07-21 01:59:04,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:59:04,851 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:04,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:59:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-21 01:59:04,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-21 01:59:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-07-21 01:59:04,879 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2022-07-21 01:59:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:04,879 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-07-21 01:59:04,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-07-21 01:59:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 01:59:04,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:04,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:04,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:59:04,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1335578817, now seen corresponding path program 1 times [2022-07-21 01:59:04,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:59:04,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769240635] [2022-07-21 01:59:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:04,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:59:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:04,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:59:04,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769240635] [2022-07-21 01:59:04,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769240635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:04,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:04,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:59:04,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878544075] [2022-07-21 01:59:04,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:04,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:59:04,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:59:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:59:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:59:04,958 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:05,031 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2022-07-21 01:59:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:59:05,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-21 01:59:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:05,034 INFO L225 Difference]: With dead ends: 57 [2022-07-21 01:59:05,034 INFO L226 Difference]: Without dead ends: 35 [2022-07-21 01:59:05,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:59:05,036 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:05,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:59:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-21 01:59:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-21 01:59:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 33 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-07-21 01:59:05,049 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 12 [2022-07-21 01:59:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:05,050 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-07-21 01:59:05,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-07-21 01:59:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 01:59:05,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:05,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:05,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:59:05,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:05,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2144925443, now seen corresponding path program 1 times [2022-07-21 01:59:05,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:59:05,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509994529] [2022-07-21 01:59:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:05,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:59:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:59:05,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509994529] [2022-07-21 01:59:05,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509994529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:05,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:05,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:59:05,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876590623] [2022-07-21 01:59:05,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:05,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:59:05,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:59:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:59:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:59:05,200 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:05,273 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2022-07-21 01:59:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:59:05,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-21 01:59:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:05,274 INFO L225 Difference]: With dead ends: 73 [2022-07-21 01:59:05,275 INFO L226 Difference]: Without dead ends: 38 [2022-07-21 01:59:05,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:59:05,277 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:05,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:59:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-21 01:59:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-07-21 01:59:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-07-21 01:59:05,287 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 12 [2022-07-21 01:59:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:05,287 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-07-21 01:59:05,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-07-21 01:59:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:59:05,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:05,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:05,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 01:59:05,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1456438760, now seen corresponding path program 1 times [2022-07-21 01:59:05,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:59:05,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389675484] [2022-07-21 01:59:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:05,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:59:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:05,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:59:05,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389675484] [2022-07-21 01:59:05,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389675484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:05,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:05,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:59:05,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645849087] [2022-07-21 01:59:05,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:05,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:59:05,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:59:05,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:59:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:59:05,388 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:05,446 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2022-07-21 01:59:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:59:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-21 01:59:05,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:05,448 INFO L225 Difference]: With dead ends: 59 [2022-07-21 01:59:05,448 INFO L226 Difference]: Without dead ends: 39 [2022-07-21 01:59:05,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:59:05,451 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:05,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:59:05,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-21 01:59:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2022-07-21 01:59:05,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 35 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-07-21 01:59:05,455 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 18 [2022-07-21 01:59:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:05,455 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-07-21 01:59:05,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-07-21 01:59:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-21 01:59:05,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:05,456 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:05,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 01:59:05,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash -53531200, now seen corresponding path program 1 times [2022-07-21 01:59:05,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:59:05,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131472860] [2022-07-21 01:59:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:59:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 01:59:05,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:59:05,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131472860] [2022-07-21 01:59:05,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131472860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:05,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:05,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 01:59:05,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30220107] [2022-07-21 01:59:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:05,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 01:59:05,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:59:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 01:59:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:59:05,719 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:05,866 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2022-07-21 01:59:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 01:59:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-21 01:59:05,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:05,868 INFO L225 Difference]: With dead ends: 80 [2022-07-21 01:59:05,868 INFO L226 Difference]: Without dead ends: 50 [2022-07-21 01:59:05,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 01:59:05,869 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 105 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:05,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 83 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:59:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-21 01:59:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2022-07-21 01:59:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-07-21 01:59:05,875 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 21 [2022-07-21 01:59:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:05,875 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-07-21 01:59:05,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-07-21 01:59:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 01:59:05,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:05,877 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:05,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 01:59:05,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2012239088, now seen corresponding path program 1 times [2022-07-21 01:59:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:59:05,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431650118] [2022-07-21 01:59:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:59:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:06,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:59:06,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431650118] [2022-07-21 01:59:06,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431650118] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 01:59:06,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230780903] [2022-07-21 01:59:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:06,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 01:59:06,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:59:06,316 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) [2022-07-21 01:59:06,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 01:59:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:06,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-21 01:59:06,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:59:06,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 01:59:06,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 01:59:06,725 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-21 01:59:06,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-21 01:59:06,891 INFO L356 Elim1Store]: treesize reduction 152, result has 22.1 percent of original size [2022-07-21 01:59:06,892 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-21 01:59:06,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:59:07,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 01:59:07,094 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 125 context size 125 output size 125 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:764) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:725) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:643) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:335) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 01:59:07,096 INFO L158 Benchmark]: Toolchain (without parser) took 3673.91ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 46.7MB in the beginning and 29.6MB in the end (delta: 17.1MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2022-07-21 01:59:07,096 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:59:07,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.02ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 41.7MB in the end (delta: 4.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 01:59:07,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.93ms. Allocated memory is still 65.0MB. Free memory was 41.5MB in the beginning and 39.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:59:07,097 INFO L158 Benchmark]: Boogie Preprocessor took 52.25ms. Allocated memory is still 65.0MB. Free memory was 39.4MB in the beginning and 37.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:59:07,097 INFO L158 Benchmark]: RCFGBuilder took 525.55ms. Allocated memory is still 65.0MB. Free memory was 37.5MB in the beginning and 40.8MB in the end (delta: -3.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-07-21 01:59:07,098 INFO L158 Benchmark]: TraceAbstraction took 2533.78ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 40.2MB in the beginning and 29.6MB in the end (delta: 10.7MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2022-07-21 01:59:07,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.02ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 41.7MB in the end (delta: 4.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.93ms. Allocated memory is still 65.0MB. Free memory was 41.5MB in the beginning and 39.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.25ms. Allocated memory is still 65.0MB. Free memory was 39.4MB in the beginning and 37.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 525.55ms. Allocated memory is still 65.0MB. Free memory was 37.5MB in the beginning and 40.8MB in the end (delta: -3.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2533.78ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 40.2MB in the beginning and 29.6MB in the end (delta: 10.7MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 125 context size 125 output size 125 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 125 context size 125 output size 125: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-21 01:59:07,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/heap-manipulation/tree-4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:59:09,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:59:09,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:59:09,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:59:09,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:59:09,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:59:09,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:59:09,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:59:09,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:59:09,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:59:09,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:59:09,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:59:09,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:59:09,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:59:09,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:59:09,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:59:09,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:59:09,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:59:09,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:59:09,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:59:09,117 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:59:09,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:59:09,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:59:09,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:59:09,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:59:09,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:59:09,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:59:09,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:59:09,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:59:09,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:59:09,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:59:09,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:59:09,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:59:09,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:59:09,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:59:09,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:59:09,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:59:09,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:59:09,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:59:09,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:59:09,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:59:09,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:59:09,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:59:09,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:59:09,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:59:09,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:59:09,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:59:09,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:59:09,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:59:09,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:59:09,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:59:09,178 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:59:09,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:59:09,179 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:59:09,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:59:09,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:59:09,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:59:09,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:59:09,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:59:09,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:59:09,181 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:59:09,181 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:59:09,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:59:09,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:59:09,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:59:09,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:59:09,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:59:09,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:59:09,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:59:09,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:59:09,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:59:09,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:59:09,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:59:09,184 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:59:09,184 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:59:09,184 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:59:09,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:59:09,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:59:09,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:59:09,185 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2022-07-21 01:59:09,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:59:09,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:59:09,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:59:09,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:59:09,549 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:59:09,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-21 01:59:09,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef26236cc/ee2abb19d9fe4670a6b965095b864fa8/FLAGb441cc79c [2022-07-21 01:59:10,131 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:59:10,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-21 01:59:10,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef26236cc/ee2abb19d9fe4670a6b965095b864fa8/FLAGb441cc79c [2022-07-21 01:59:10,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef26236cc/ee2abb19d9fe4670a6b965095b864fa8 [2022-07-21 01:59:10,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:59:10,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:59:10,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:59:10,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:59:10,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:59:10,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:10,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464f1d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10, skipping insertion in model container [2022-07-21 01:59:10,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:10,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:59:10,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:59:10,891 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-07-21 01:59:10,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:59:10,919 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:59:10,947 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-07-21 01:59:10,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:59:10,993 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:59:10,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10 WrapperNode [2022-07-21 01:59:10,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:59:10,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:59:10,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:59:10,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:59:11,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,065 INFO L137 Inliner]: procedures = 125, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-07-21 01:59:11,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:59:11,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:59:11,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:59:11,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:59:11,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:59:11,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:59:11,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:59:11,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:59:11,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (1/1) ... [2022-07-21 01:59:11,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:59:11,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:59:11,169 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) [2022-07-21 01:59:11,197 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 [2022-07-21 01:59:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 01:59:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-21 01:59:11,221 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-21 01:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 01:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 01:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 01:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 01:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:59:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:59:11,363 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:59:11,364 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:59:11,844 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:59:11,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:59:11,852 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-21 01:59:11,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:59:11 BoogieIcfgContainer [2022-07-21 01:59:11,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:59:11,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:59:11,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:59:11,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:59:11,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:59:10" (1/3) ... [2022-07-21 01:59:11,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d74467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:59:11, skipping insertion in model container [2022-07-21 01:59:11,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:10" (2/3) ... [2022-07-21 01:59:11,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d74467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:59:11, skipping insertion in model container [2022-07-21 01:59:11,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:59:11" (3/3) ... [2022-07-21 01:59:11,862 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-4.i [2022-07-21 01:59:11,874 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:59:11,874 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:59:11,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:59:11,949 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@113b2275, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e8abe0e [2022-07-21 01:59:11,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:59:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 43 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 01:59:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:59:11,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:11,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:11,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash -698675410, now seen corresponding path program 1 times [2022-07-21 01:59:11,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:59:11,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105764553] [2022-07-21 01:59:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:11,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:59:11,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:59:11,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:59:11,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:59:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:12,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:59:12,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:59:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:12,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:59:12,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:59:12,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105764553] [2022-07-21 01:59:12,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105764553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:12,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:12,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:59:12,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711519854] [2022-07-21 01:59:12,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:12,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:59:12,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:59:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:59:12,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:59:12,133 INFO L87 Difference]: Start difference. First operand has 45 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 43 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:12,158 INFO L93 Difference]: Finished difference Result 86 states and 145 transitions. [2022-07-21 01:59:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:59:12,160 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-21 01:59:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:12,166 INFO L225 Difference]: With dead ends: 86 [2022-07-21 01:59:12,166 INFO L226 Difference]: Without dead ends: 30 [2022-07-21 01:59:12,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:59:12,172 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:12,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:59:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-21 01:59:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-21 01:59:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-07-21 01:59:12,198 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 11 [2022-07-21 01:59:12,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:12,198 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-07-21 01:59:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2022-07-21 01:59:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:59:12,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:12,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:12,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 01:59:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:59:12,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1871281309, now seen corresponding path program 1 times [2022-07-21 01:59:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:59:12,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936213236] [2022-07-21 01:59:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:12,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:59:12,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:59:12,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:59:12,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:59:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:12,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:59:12,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:59:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:12,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:59:12,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:59:12,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936213236] [2022-07-21 01:59:12,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936213236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:12,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:12,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:59:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694350754] [2022-07-21 01:59:12,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:12,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:59:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:59:12,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:59:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:59:12,521 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:12,627 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-07-21 01:59:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:59:12,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-21 01:59:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:12,635 INFO L225 Difference]: With dead ends: 55 [2022-07-21 01:59:12,635 INFO L226 Difference]: Without dead ends: 33 [2022-07-21 01:59:12,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:59:12,637 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:12,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:59:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-21 01:59:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-21 01:59:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-07-21 01:59:12,643 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 11 [2022-07-21 01:59:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:12,643 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-07-21 01:59:12,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-07-21 01:59:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:59:12,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:12,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:12,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:59:12,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:59:12,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1614339361, now seen corresponding path program 1 times [2022-07-21 01:59:12,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:59:12,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575397012] [2022-07-21 01:59:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:12,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:59:12,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:59:12,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:59:12,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 01:59:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:12,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 01:59:12,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:59:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:13,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:59:13,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:59:13,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575397012] [2022-07-21 01:59:13,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575397012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:13,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:13,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:59:13,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467637710] [2022-07-21 01:59:13,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:13,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:59:13,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:59:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:59:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:59:13,018 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:13,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:13,141 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2022-07-21 01:59:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:59:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-21 01:59:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:13,144 INFO L225 Difference]: With dead ends: 70 [2022-07-21 01:59:13,144 INFO L226 Difference]: Without dead ends: 36 [2022-07-21 01:59:13,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:59:13,145 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:13,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:59:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-21 01:59:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-07-21 01:59:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-07-21 01:59:13,150 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 11 [2022-07-21 01:59:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:13,151 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-07-21 01:59:13,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-07-21 01:59:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 01:59:13,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:13,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:13,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 01:59:13,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:59:13,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1107277079, now seen corresponding path program 1 times [2022-07-21 01:59:13,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:59:13,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386153619] [2022-07-21 01:59:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:13,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:59:13,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:59:13,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:59:13,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 01:59:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:13,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 01:59:13,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:59:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:59:13,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:59:13,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:59:13,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386153619] [2022-07-21 01:59:13,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386153619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:13,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:13,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:59:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929402630] [2022-07-21 01:59:13,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:59:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:59:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:59:13,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:59:13,514 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:14,672 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-07-21 01:59:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:59:14,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-21 01:59:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:14,674 INFO L225 Difference]: With dead ends: 57 [2022-07-21 01:59:14,674 INFO L226 Difference]: Without dead ends: 37 [2022-07-21 01:59:14,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:59:14,676 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:14,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 01:59:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-21 01:59:14,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-07-21 01:59:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-07-21 01:59:14,681 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2022-07-21 01:59:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:14,681 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-07-21 01:59:14,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-07-21 01:59:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 01:59:14,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:14,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:59:14,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 01:59:14,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:59:14,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash 481590258, now seen corresponding path program 1 times [2022-07-21 01:59:14,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:59:14,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367322886] [2022-07-21 01:59:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:14,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:59:14,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:59:14,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:59:14,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 01:59:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:15,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 01:59:15,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:59:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 01:59:15,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:59:15,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:59:15,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367322886] [2022-07-21 01:59:15,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367322886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:59:15,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:59:15,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 01:59:15,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594989421] [2022-07-21 01:59:15,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:59:15,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 01:59:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:59:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 01:59:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:59:15,288 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:18,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:59:18,446 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2022-07-21 01:59:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 01:59:18,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-21 01:59:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:59:18,448 INFO L225 Difference]: With dead ends: 77 [2022-07-21 01:59:18,448 INFO L226 Difference]: Without dead ends: 48 [2022-07-21 01:59:18,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 01:59:18,450 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 104 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:59:18,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 73 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 01:59:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-21 01:59:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2022-07-21 01:59:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-07-21 01:59:18,462 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2022-07-21 01:59:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:59:18,463 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-07-21 01:59:18,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:59:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-07-21 01:59:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 01:59:18,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:59:18,464 INFO L195 NwaCegarLoop]: 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] [2022-07-21 01:59:18,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-21 01:59:18,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:59:18,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:59:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:59:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash -342395699, now seen corresponding path program 1 times [2022-07-21 01:59:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:59:18,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449880215] [2022-07-21 01:59:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:59:18,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:59:18,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:59:18,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:59:18,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 01:59:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:59:19,357 WARN L261 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 189 conjunts are in the unsatisfiable core [2022-07-21 01:59:19,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:59:19,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 01:59:19,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 01:59:19,507 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-21 01:59:19,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-21 01:59:19,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 01:59:25,365 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 68 DAG size of output: 28 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-21 01:59:25,366 INFO L356 Elim1Store]: treesize reduction 152, result has 22.1 percent of original size [2022-07-21 01:59:25,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:59:25,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449880215] [2022-07-21 01:59:25,368 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-21 01:59:25,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 01:59:25,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:59:25,569 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_32| input size 256 context size 256 output size 256 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:764) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:725) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:643) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:335) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 01:59:25,571 INFO L158 Benchmark]: Toolchain (without parser) took 14981.93ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 33.8MB in the beginning and 50.8MB in the end (delta: -17.0MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2022-07-21 01:59:25,572 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory is still 38.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:59:25,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.06ms. Allocated memory is still 56.6MB. Free memory was 33.7MB in the beginning and 31.4MB in the end (delta: 2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 01:59:25,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.99ms. Allocated memory is still 56.6MB. Free memory was 31.4MB in the beginning and 29.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:59:25,572 INFO L158 Benchmark]: Boogie Preprocessor took 65.04ms. Allocated memory is still 56.6MB. Free memory was 29.2MB in the beginning and 27.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:59:25,573 INFO L158 Benchmark]: RCFGBuilder took 721.38ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 26.9MB in the beginning and 36.0MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:59:25,573 INFO L158 Benchmark]: TraceAbstraction took 13714.20ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 35.4MB in the beginning and 50.8MB in the end (delta: -15.4MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2022-07-21 01:59:25,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory is still 38.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.06ms. Allocated memory is still 56.6MB. Free memory was 33.7MB in the beginning and 31.4MB in the end (delta: 2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.99ms. Allocated memory is still 56.6MB. Free memory was 31.4MB in the beginning and 29.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.04ms. Allocated memory is still 56.6MB. Free memory was 29.2MB in the beginning and 27.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 721.38ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 26.9MB in the beginning and 36.0MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13714.20ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 35.4MB in the beginning and 50.8MB in the end (delta: -15.4MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_32| input size 256 context size 256 output size 256 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_32| input size 256 context size 256 output size 256: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-21 01:59:25,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_32| input size 256 context size 256 output size 256