./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 6c24879c 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-?-6c24879 [2022-07-12 03:14:38,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:14:38,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:14:38,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:14:38,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:14:38,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:14:38,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:14:38,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:14:38,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:14:38,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:14:38,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:14:38,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:14:38,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:14:38,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:14:38,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:14:38,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:14:38,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:14:38,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:14:38,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:14:38,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:14:38,107 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:14:38,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:14:38,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:14:38,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:14:38,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:14:38,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:14:38,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:14:38,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:14:38,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:14:38,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:14:38,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:14:38,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:14:38,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:14:38,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:14:38,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:14:38,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:14:38,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:14:38,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:14:38,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:14:38,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:14:38,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:14:38,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:14:38,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:14:38,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:14:38,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:14:38,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:14:38,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:14:38,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:14:38,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:14:38,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:14:38,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:14:38,159 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:14:38,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:14:38,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:14:38,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:14:38,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:14:38,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:14:38,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:14:38,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:14:38,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:14:38,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:14:38,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:14:38,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:14:38,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:14:38,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:14:38,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:14:38,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:14:38,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:14:38,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:14:38,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:14:38,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:14:38,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:14:38,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:14:38,164 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:14:38,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:14:38,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:14:38,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2022-07-12 03:14:38,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:14:38,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:14:38,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:14:38,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:14:38,446 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:14:38,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-12 03:14:38,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319412ae4/ddd384db855545d3af7bc942aa045458/FLAG1f70528ea [2022-07-12 03:14:38,995 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:14:38,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-12 03:14:39,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319412ae4/ddd384db855545d3af7bc942aa045458/FLAG1f70528ea [2022-07-12 03:14:39,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319412ae4/ddd384db855545d3af7bc942aa045458 [2022-07-12 03:14:39,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:14:39,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:14:39,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:14:39,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:14:39,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:14:39,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b719161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39, skipping insertion in model container [2022-07-12 03:14:39,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:14:39,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:14:39,613 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] [2022-07-12 03:14:39,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:14:39,658 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:14:39,693 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] [2022-07-12 03:14:39,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:14:39,722 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:14:39,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39 WrapperNode [2022-07-12 03:14:39,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:14:39,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:14:39,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:14:39,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:14:39,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,787 INFO L137 Inliner]: procedures = 122, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2022-07-12 03:14:39,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:14:39,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:14:39,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:14:39,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:14:39,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:14:39,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:14:39,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:14:39,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:14:39,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (1/1) ... [2022-07-12 03:14:39,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:14:39,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:14:39,860 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) [2022-07-12 03:14:39,861 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 [2022-07-12 03:14:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 03:14:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-12 03:14:39,888 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-12 03:14:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 03:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 03:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 03:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:14:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:14:39,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:14:39,973 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:14:39,989 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:14:40,290 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:14:40,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:14:40,300 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-12 03:14:40,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:14:40 BoogieIcfgContainer [2022-07-12 03:14:40,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:14:40,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:14:40,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:14:40,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:14:40,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:14:39" (1/3) ... [2022-07-12 03:14:40,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ccea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:14:40, skipping insertion in model container [2022-07-12 03:14:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:39" (2/3) ... [2022-07-12 03:14:40,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ccea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:14:40, skipping insertion in model container [2022-07-12 03:14:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:14:40" (3/3) ... [2022-07-12 03:14:40,310 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-4.i [2022-07-12 03:14:40,322 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:14:40,323 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:14:40,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:14:40,384 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@6967e4d7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@516a591c [2022-07-12 03:14:40,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:14:40,397 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) [2022-07-12 03:14:40,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-12 03:14:40,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:40,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:40,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:40,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:40,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1979325632, now seen corresponding path program 1 times [2022-07-12 03:14:40,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:40,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606844561] [2022-07-12 03:14:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:40,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:40,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606844561] [2022-07-12 03:14:40,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606844561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:40,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:40,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:14:40,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304820853] [2022-07-12 03:14:40,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:40,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:14:40,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:14:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:14:40,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:14:40,599 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) [2022-07-12 03:14:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:40,621 INFO L93 Difference]: Finished difference Result 88 states and 147 transitions. [2022-07-12 03:14:40,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:14:40,623 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 [2022-07-12 03:14:40,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:40,629 INFO L225 Difference]: With dead ends: 88 [2022-07-12 03:14:40,630 INFO L226 Difference]: Without dead ends: 31 [2022-07-12 03:14:40,633 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 [2022-07-12 03:14:40,636 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 [2022-07-12 03:14:40,637 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] [2022-07-12 03:14:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-12 03:14:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-12 03:14:40,664 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) [2022-07-12 03:14:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-07-12 03:14:40,666 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2022-07-12 03:14:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:40,666 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-07-12 03:14:40,666 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) [2022-07-12 03:14:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-07-12 03:14:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 03:14:40,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:40,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:40,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:14:40,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1335578817, now seen corresponding path program 1 times [2022-07-12 03:14:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:40,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305989961] [2022-07-12 03:14:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:40,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:40,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:40,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305989961] [2022-07-12 03:14:40,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305989961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:40,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:40,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:14:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390403258] [2022-07-12 03:14:40,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:40,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:14:40,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:14:40,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:14:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:14:40,739 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) [2022-07-12 03:14:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:40,798 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2022-07-12 03:14:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:14:40,802 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 [2022-07-12 03:14:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:40,803 INFO L225 Difference]: With dead ends: 57 [2022-07-12 03:14:40,803 INFO L226 Difference]: Without dead ends: 35 [2022-07-12 03:14:40,803 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 [2022-07-12 03:14:40,805 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:14:40,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:14:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-12 03:14:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-12 03:14:40,819 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) [2022-07-12 03:14:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-07-12 03:14:40,825 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 12 [2022-07-12 03:14:40,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:40,826 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-07-12 03:14:40,826 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) [2022-07-12 03:14:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-07-12 03:14:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 03:14:40,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:40,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:40,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:14:40,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:40,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2144925443, now seen corresponding path program 1 times [2022-07-12 03:14:40,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:40,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810658391] [2022-07-12 03:14:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:40,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810658391] [2022-07-12 03:14:40,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810658391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:40,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:40,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:14:40,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708292619] [2022-07-12 03:14:40,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:40,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:14:40,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:14:40,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:14:40,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:14:40,966 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) [2022-07-12 03:14:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:41,035 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2022-07-12 03:14:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:14:41,036 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 [2022-07-12 03:14:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:41,037 INFO L225 Difference]: With dead ends: 73 [2022-07-12 03:14:41,037 INFO L226 Difference]: Without dead ends: 38 [2022-07-12 03:14:41,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:14:41,039 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 [2022-07-12 03:14:41,040 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] [2022-07-12 03:14:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-12 03:14:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-07-12 03:14:41,044 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) [2022-07-12 03:14:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-07-12 03:14:41,045 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 12 [2022-07-12 03:14:41,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:41,045 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-07-12 03:14:41,045 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) [2022-07-12 03:14:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-07-12 03:14:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-12 03:14:41,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:41,047 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 03:14:41,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1456438760, now seen corresponding path program 1 times [2022-07-12 03:14:41,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:41,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110650969] [2022-07-12 03:14:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:41,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:41,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:41,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110650969] [2022-07-12 03:14:41,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110650969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:41,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:41,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:14:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567976257] [2022-07-12 03:14:41,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:41,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:14:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:14:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:14:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:14:41,145 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) [2022-07-12 03:14:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:41,204 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2022-07-12 03:14:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:14:41,204 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 [2022-07-12 03:14:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:41,205 INFO L225 Difference]: With dead ends: 59 [2022-07-12 03:14:41,205 INFO L226 Difference]: Without dead ends: 39 [2022-07-12 03:14:41,206 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 [2022-07-12 03:14:41,207 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:14:41,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:14:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-12 03:14:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2022-07-12 03:14:41,220 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) [2022-07-12 03:14:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-07-12 03:14:41,221 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 18 [2022-07-12 03:14:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:41,221 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-07-12 03:14:41,221 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) [2022-07-12 03:14:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-07-12 03:14:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-12 03:14:41,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:41,222 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] [2022-07-12 03:14:41,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 03:14:41,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:41,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash -53531200, now seen corresponding path program 1 times [2022-07-12 03:14:41,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:41,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355711532] [2022-07-12 03:14:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:41,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 03:14:41,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:41,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355711532] [2022-07-12 03:14:41,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355711532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:41,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:41,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 03:14:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376848928] [2022-07-12 03:14:41,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:41,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 03:14:41,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:14:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 03:14:41,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:14:41,466 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) [2022-07-12 03:14:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:41,640 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2022-07-12 03:14:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 03:14:41,641 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 [2022-07-12 03:14:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:41,642 INFO L225 Difference]: With dead ends: 80 [2022-07-12 03:14:41,642 INFO L226 Difference]: Without dead ends: 50 [2022-07-12 03:14:41,643 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 [2022-07-12 03:14:41,644 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 [2022-07-12 03:14:41,647 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] [2022-07-12 03:14:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-12 03:14:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2022-07-12 03:14:41,653 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) [2022-07-12 03:14:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-07-12 03:14:41,654 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 21 [2022-07-12 03:14:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:41,654 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-07-12 03:14:41,655 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) [2022-07-12 03:14:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-07-12 03:14:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 03:14:41,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:41,658 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] [2022-07-12 03:14:41,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 03:14:41,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:41,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2012239088, now seen corresponding path program 1 times [2022-07-12 03:14:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:41,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525954199] [2022-07-12 03:14:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:41,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:42,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525954199] [2022-07-12 03:14:42,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525954199] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:14:42,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046548838] [2022-07-12 03:14:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:42,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:14:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:14:42,175 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) [2022-07-12 03:14:42,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 03:14:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:42,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-12 03:14:42,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:42,425 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 [2022-07-12 03:14:42,575 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 [2022-07-12 03:14:42,587 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-12 03:14:42,588 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 [2022-07-12 03:14:42,814 INFO L356 Elim1Store]: treesize reduction 152, result has 22.1 percent of original size [2022-07-12 03:14:42,815 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-12 03:14:42,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:14:43,015 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 [2022-07-12 03:14:43,016 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 129 context size 129 output size 129 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:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$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) [2022-07-12 03:14:43,020 INFO L158 Benchmark]: Toolchain (without parser) took 3707.55ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 59.2MB in the beginning and 90.3MB in the end (delta: -31.1MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2022-07-12 03:14:43,021 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:14:43,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.52ms. Allocated memory is still 100.7MB. Free memory was 59.0MB in the beginning and 66.5MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 03:14:43,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.79ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 64.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:14:43,021 INFO L158 Benchmark]: Boogie Preprocessor took 39.71ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 62.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:14:43,022 INFO L158 Benchmark]: RCFGBuilder took 473.19ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 45.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-12 03:14:43,022 INFO L158 Benchmark]: TraceAbstraction took 2714.42ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 44.9MB in the beginning and 90.3MB in the end (delta: -45.4MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2022-07-12 03:14:43,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.52ms. Allocated memory is still 100.7MB. Free memory was 59.0MB in the beginning and 66.5MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.79ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 64.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.71ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 62.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 473.19ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 45.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2714.42ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 44.9MB in the beginning and 90.3MB in the end (delta: -45.4MB). Peak memory consumption was 38.4MB. 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 129 context size 129 output size 129 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 129 context size 129 output size 129: 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. [2022-07-12 03:14:43,052 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-?-6c24879 [2022-07-12 03:14:44,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:14:44,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:14:44,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:14:44,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:14:44,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:14:44,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:14:44,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:14:44,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:14:44,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:14:44,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:14:44,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:14:44,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:14:44,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:14:44,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:14:44,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:14:44,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:14:44,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:14:44,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:14:44,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:14:44,996 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:14:44,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:14:44,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:14:44,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:14:45,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:14:45,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:14:45,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:14:45,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:14:45,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:14:45,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:14:45,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:14:45,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:14:45,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:14:45,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:14:45,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:14:45,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:14:45,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:14:45,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:14:45,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:14:45,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:14:45,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:14:45,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:14:45,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 03:14:45,068 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:14:45,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:14:45,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:14:45,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:14:45,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:14:45,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:14:45,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:14:45,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:14:45,071 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:14:45,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:14:45,072 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:14:45,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:14:45,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:14:45,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:14:45,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:14:45,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:14:45,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 03:14:45,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 03:14:45,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 03:14:45,074 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:14:45,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:14:45,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:14:45,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:14:45,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:14:45,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:14:45,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:14:45,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:14:45,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:14:45,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:14:45,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:14:45,077 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 03:14:45,077 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 03:14:45,077 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:14:45,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:14:45,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:14:45,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 03:14:45,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2022-07-12 03:14:45,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:14:45,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:14:45,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:14:45,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:14:45,427 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:14:45,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-12 03:14:45,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e09f33f/1d5a8d8d932d44a3838f444822cf877a/FLAG1789ea099 [2022-07-12 03:14:45,882 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:14:45,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-12 03:14:45,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e09f33f/1d5a8d8d932d44a3838f444822cf877a/FLAG1789ea099 [2022-07-12 03:14:45,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e09f33f/1d5a8d8d932d44a3838f444822cf877a [2022-07-12 03:14:45,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:14:45,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:14:45,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:14:45,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:14:45,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:14:45,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:14:45" (1/1) ... [2022-07-12 03:14:45,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@866eaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:45, skipping insertion in model container [2022-07-12 03:14:45,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:14:45" (1/1) ... [2022-07-12 03:14:45,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:14:45,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:14:46,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-07-12 03:14:46,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:14:46,306 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:14:46,338 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] [2022-07-12 03:14:46,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:14:46,373 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:14:46,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46 WrapperNode [2022-07-12 03:14:46,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:14:46,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:14:46,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:14:46,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:14:46,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,441 INFO L137 Inliner]: procedures = 125, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-07-12 03:14:46,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:14:46,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:14:46,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:14:46,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:14:46,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:14:46,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:14:46,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:14:46,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:14:46,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (1/1) ... [2022-07-12 03:14:46,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:14:46,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:14:46,528 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) [2022-07-12 03:14:46,556 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 [2022-07-12 03:14:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 03:14:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-12 03:14:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-12 03:14:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:14:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:14:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 03:14:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 03:14:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:14:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 03:14:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 03:14:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:14:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:14:46,659 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:14:46,660 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:14:47,103 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:14:47,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:14:47,108 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-12 03:14:47,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:14:47 BoogieIcfgContainer [2022-07-12 03:14:47,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:14:47,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:14:47,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:14:47,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:14:47,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:14:45" (1/3) ... [2022-07-12 03:14:47,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dd4c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:14:47, skipping insertion in model container [2022-07-12 03:14:47,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:46" (2/3) ... [2022-07-12 03:14:47,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dd4c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:14:47, skipping insertion in model container [2022-07-12 03:14:47,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:14:47" (3/3) ... [2022-07-12 03:14:47,117 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-4.i [2022-07-12 03:14:47,129 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:14:47,129 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:14:47,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:14:47,186 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@d034ff6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@39d7df89 [2022-07-12 03:14:47,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:14:47,190 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) [2022-07-12 03:14:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-12 03:14:47,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:47,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:47,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash -698675410, now seen corresponding path program 1 times [2022-07-12 03:14:47,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:14:47,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045236828] [2022-07-12 03:14:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:47,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:14:47,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:14:47,221 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) [2022-07-12 03:14:47,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 03:14:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:47,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 03:14:47,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:47,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:14:47,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:14:47,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045236828] [2022-07-12 03:14:47,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045236828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:47,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:47,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:14:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222829185] [2022-07-12 03:14:47,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:14:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:14:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:14:47,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:14:47,362 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) [2022-07-12 03:14:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:47,385 INFO L93 Difference]: Finished difference Result 86 states and 145 transitions. [2022-07-12 03:14:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:14:47,387 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 [2022-07-12 03:14:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:47,393 INFO L225 Difference]: With dead ends: 86 [2022-07-12 03:14:47,393 INFO L226 Difference]: Without dead ends: 30 [2022-07-12 03:14:47,395 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 [2022-07-12 03:14:47,398 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 [2022-07-12 03:14:47,400 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] [2022-07-12 03:14:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-12 03:14:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-12 03:14:47,435 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) [2022-07-12 03:14:47,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-07-12 03:14:47,438 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 11 [2022-07-12 03:14:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:47,439 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-07-12 03:14:47,439 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) [2022-07-12 03:14:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2022-07-12 03:14:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-12 03:14:47,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:47,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:47,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:14:47,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:14:47,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:47,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1871281309, now seen corresponding path program 1 times [2022-07-12 03:14:47,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:14:47,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166109373] [2022-07-12 03:14:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:47,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:14:47,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:14:47,654 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) [2022-07-12 03:14:47,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 03:14:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:47,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 03:14:47,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:47,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:14:47,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:14:47,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166109373] [2022-07-12 03:14:47,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166109373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:47,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:47,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:14:47,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496155086] [2022-07-12 03:14:47,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:47,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:14:47,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:14:47,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:14:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:14:47,740 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) [2022-07-12 03:14:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:47,857 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-07-12 03:14:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:14:47,864 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 [2022-07-12 03:14:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:47,865 INFO L225 Difference]: With dead ends: 55 [2022-07-12 03:14:47,865 INFO L226 Difference]: Without dead ends: 33 [2022-07-12 03:14:47,866 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 [2022-07-12 03:14:47,867 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 [2022-07-12 03:14:47,867 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] [2022-07-12 03:14:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-12 03:14:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-12 03:14:47,872 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) [2022-07-12 03:14:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-07-12 03:14:47,874 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 11 [2022-07-12 03:14:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:47,874 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-07-12 03:14:47,875 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) [2022-07-12 03:14:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-07-12 03:14:47,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-12 03:14:47,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:47,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:47,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 03:14:48,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:14:48,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1614339361, now seen corresponding path program 1 times [2022-07-12 03:14:48,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:14:48,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702173413] [2022-07-12 03:14:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:48,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:14:48,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:14:48,090 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) [2022-07-12 03:14:48,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 03:14:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:48,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 03:14:48,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:48,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:14:48,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:14:48,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702173413] [2022-07-12 03:14:48,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702173413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:48,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:48,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:14:48,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753469048] [2022-07-12 03:14:48,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:48,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:14:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:14:48,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:14:48,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:14:48,256 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) [2022-07-12 03:14:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:48,340 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2022-07-12 03:14:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:14:48,341 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 [2022-07-12 03:14:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:48,341 INFO L225 Difference]: With dead ends: 70 [2022-07-12 03:14:48,342 INFO L226 Difference]: Without dead ends: 36 [2022-07-12 03:14:48,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:14:48,343 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-07-12 03:14:48,344 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] [2022-07-12 03:14:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-12 03:14:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-07-12 03:14:48,348 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) [2022-07-12 03:14:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-07-12 03:14:48,349 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 11 [2022-07-12 03:14:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:48,349 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-07-12 03:14:48,350 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) [2022-07-12 03:14:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-07-12 03:14:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 03:14:48,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:48,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:48,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 03:14:48,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:14:48,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1107277079, now seen corresponding path program 1 times [2022-07-12 03:14:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:14:48,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125691933] [2022-07-12 03:14:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:48,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:14:48,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:14:48,564 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) [2022-07-12 03:14:48,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 03:14:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:48,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 03:14:48,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:48,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:14:48,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:14:48,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125691933] [2022-07-12 03:14:48,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125691933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:48,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:48,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:14:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553424254] [2022-07-12 03:14:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:48,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:14:48,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:14:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:14:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:14:48,658 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) [2022-07-12 03:14:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:49,621 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-07-12 03:14:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:14:49,623 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 [2022-07-12 03:14:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:49,624 INFO L225 Difference]: With dead ends: 57 [2022-07-12 03:14:49,624 INFO L226 Difference]: Without dead ends: 37 [2022-07-12 03:14:49,624 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 [2022-07-12 03:14:49,625 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:14:49,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 03:14:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-12 03:14:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-07-12 03:14:49,630 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) [2022-07-12 03:14:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-07-12 03:14:49,630 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2022-07-12 03:14:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:49,631 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-07-12 03:14:49,631 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) [2022-07-12 03:14:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-07-12 03:14:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 03:14:49,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:49,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:49,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 03:14:49,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:14:49,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:49,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:49,844 INFO L85 PathProgramCache]: Analyzing trace with hash 481590258, now seen corresponding path program 1 times [2022-07-12 03:14:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:14:49,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755158667] [2022-07-12 03:14:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:49,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:14:49,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:14:49,847 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) [2022-07-12 03:14:49,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 03:14:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:50,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 03:14:50,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 03:14:50,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:14:50,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:14:50,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755158667] [2022-07-12 03:14:50,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755158667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:50,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:50,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 03:14:50,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822464231] [2022-07-12 03:14:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:50,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 03:14:50,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:14:50,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 03:14:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:14:50,183 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) [2022-07-12 03:14:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:52,849 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2022-07-12 03:14:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 03:14:52,850 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 [2022-07-12 03:14:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:52,851 INFO L225 Difference]: With dead ends: 77 [2022-07-12 03:14:52,851 INFO L226 Difference]: Without dead ends: 48 [2022-07-12 03:14:52,852 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 [2022-07-12 03:14:52,853 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 104 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 03:14:52,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 73 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 03:14:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-12 03:14:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2022-07-12 03:14:52,857 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) [2022-07-12 03:14:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-07-12 03:14:52,858 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2022-07-12 03:14:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:52,858 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-07-12 03:14:52,858 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) [2022-07-12 03:14:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-07-12 03:14:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 03:14:52,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:52,859 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] [2022-07-12 03:14:52,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 03:14:53,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:14:53,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:53,076 INFO L85 PathProgramCache]: Analyzing trace with hash -342395699, now seen corresponding path program 1 times [2022-07-12 03:14:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:14:53,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086260534] [2022-07-12 03:14:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:53,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:14:53,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:14:53,078 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) [2022-07-12 03:14:53,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 03:14:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:53,564 WARN L261 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 189 conjunts are in the unsatisfiable core [2022-07-12 03:14:53,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:53,613 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 [2022-07-12 03:14:53,708 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 [2022-07-12 03:14:53,722 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-12 03:14:53,723 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 [2022-07-12 03:14:53,740 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 [2022-07-12 03:14:58,070 INFO L356 Elim1Store]: treesize reduction 152, result has 22.1 percent of original size [2022-07-12 03:14:58,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:14:58,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086260534] [2022-07-12 03:14:58,072 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-12 03:14:58,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 03:14:58,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:14:58,274 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 252 context size 252 output size 252 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:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) 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:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) 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) [2022-07-12 03:14:58,277 INFO L158 Benchmark]: Toolchain (without parser) took 12369.38ms. Allocated memory was 75.5MB in the beginning and 109.1MB in the end (delta: 33.6MB). Free memory was 55.5MB in the beginning and 73.5MB in the end (delta: -18.0MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-07-12 03:14:58,277 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:14:58,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.69ms. Allocated memory is still 75.5MB. Free memory was 55.3MB in the beginning and 48.8MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 03:14:58,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.06ms. Allocated memory is still 75.5MB. Free memory was 48.8MB in the beginning and 46.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:14:58,278 INFO L158 Benchmark]: Boogie Preprocessor took 57.88ms. Allocated memory is still 75.5MB. Free memory was 46.4MB in the beginning and 44.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:14:58,279 INFO L158 Benchmark]: RCFGBuilder took 608.61ms. Allocated memory is still 75.5MB. Free memory was 44.4MB in the beginning and 48.1MB in the end (delta: -3.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-07-12 03:14:58,279 INFO L158 Benchmark]: TraceAbstraction took 11164.81ms. Allocated memory was 75.5MB in the beginning and 109.1MB in the end (delta: 33.6MB). Free memory was 47.9MB in the beginning and 73.5MB in the end (delta: -25.6MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2022-07-12 03:14:58,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.69ms. Allocated memory is still 75.5MB. Free memory was 55.3MB in the beginning and 48.8MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.06ms. Allocated memory is still 75.5MB. Free memory was 48.8MB in the beginning and 46.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.88ms. Allocated memory is still 75.5MB. Free memory was 46.4MB in the beginning and 44.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 608.61ms. Allocated memory is still 75.5MB. Free memory was 44.4MB in the beginning and 48.1MB in the end (delta: -3.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * TraceAbstraction took 11164.81ms. Allocated memory was 75.5MB in the beginning and 109.1MB in the end (delta: 33.6MB). Free memory was 47.9MB in the beginning and 73.5MB in the end (delta: -25.6MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_32| input size 252 context size 252 output size 252 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_32| input size 252 context size 252 output size 252: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-12 03:14:58,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_32| input size 252 context size 252 output size 252