/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/verifythis/tree_max_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:03:26,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:03:26,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:03:26,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:03:26,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:03:26,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:03:26,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:03:26,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:03:26,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:03:26,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:03:26,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:03:26,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:03:26,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:03:26,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:03:26,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:03:26,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:03:26,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:03:26,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:03:26,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:03:26,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:03:26,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:03:26,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:03:26,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:03:26,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:03:26,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:03:26,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:03:26,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:03:26,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:03:26,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:03:26,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:03:26,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:03:26,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:03:26,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:03:26,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:03:26,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:03:26,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:03:26,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:03:26,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:03:26,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:03:26,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:03:26,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:03:26,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:03:26,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:03:26,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:03:26,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:03:26,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:03:26,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:03:26,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:03:26,824 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:03:26,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:03:26,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:03:26,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:03:26,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:03:26,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:03:26,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:03:26,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:03:26,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:03:26,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:03:26,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:03:26,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:03:26,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:03:26,827 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:03:26,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:03:26,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:03:26,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:03:26,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:03:26,828 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:03:26,828 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:03:27,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:03:27,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:03:27,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:03:27,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:03:27,112 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:03:27,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_max_incorrect.c [2022-01-11 06:03:27,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67e7a266/ed04b3fbd0954d35a7572e5a28ef4155/FLAG19ec91454 [2022-01-11 06:03:27,598 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:03:27,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_max_incorrect.c [2022-01-11 06:03:27,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67e7a266/ed04b3fbd0954d35a7572e5a28ef4155/FLAG19ec91454 [2022-01-11 06:03:28,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67e7a266/ed04b3fbd0954d35a7572e5a28ef4155 [2022-01-11 06:03:28,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:03:28,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:03:28,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:03:28,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:03:28,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:03:28,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a7b34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28, skipping insertion in model container [2022-01-11 06:03:28,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:03:28,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:03:28,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_max_incorrect.c[466,479] [2022-01-11 06:03:28,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:03:28,204 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 06:03:28,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:03:28,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_max_incorrect.c[466,479] [2022-01-11 06:03:28,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:03:28,219 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:03:28,228 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_max_incorrect.c[466,479] [2022-01-11 06:03:28,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:03:28,249 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:03:28,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28 WrapperNode [2022-01-11 06:03:28,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:03:28,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:03:28,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:03:28,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:03:28,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,307 INFO L137 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 37 [2022-01-11 06:03:28,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:03:28,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:03:28,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:03:28,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:03:28,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:03:28,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:03:28,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:03:28,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:03:28,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:03:28,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:03:28,385 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) [2022-01-11 06:03:28,395 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 [2022-01-11 06:03:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-11 06:03:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:03:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-01-11 06:03:28,433 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-01-11 06:03:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2022-01-11 06:03:28,438 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2022-01-11 06:03:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:03:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-01-11 06:03:28,438 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-01-11 06:03:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-11 06:03:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-11 06:03:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 06:03:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:03:28,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:03:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 06:03:28,532 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:03:28,533 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:03:28,773 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:03:28,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:03:28,778 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:03:28,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:03:28 BoogieIcfgContainer [2022-01-11 06:03:28,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:03:28,796 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:03:28,796 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:03:28,798 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:03:28,800 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:03:28" (1/1) ... [2022-01-11 06:03:28,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:03:28 BasicIcfg [2022-01-11 06:03:28,935 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:03:28,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:03:28,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:03:28,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:03:28,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:03:28" (1/4) ... [2022-01-11 06:03:28,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471638e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:03:28, skipping insertion in model container [2022-01-11 06:03:28,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:28" (2/4) ... [2022-01-11 06:03:28,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471638e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:03:28, skipping insertion in model container [2022-01-11 06:03:28,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:03:28" (3/4) ... [2022-01-11 06:03:28,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471638e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:03:28, skipping insertion in model container [2022-01-11 06:03:28,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:03:28" (4/4) ... [2022-01-11 06:03:28,942 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max_incorrect.cTransformedIcfg [2022-01-11 06:03:28,948 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:03:28,948 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:03:29,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:03:29,016 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:03:29,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:03:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-11 06:03:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 06:03:29,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:03:29,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:03:29,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:03:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:03:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash -171171401, now seen corresponding path program 1 times [2022-01-11 06:03:29,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:03:29,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546268792] [2022-01-11 06:03:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:03:29,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:03:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:03:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-11 06:03:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:03:29,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:03:29,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546268792] [2022-01-11 06:03:29,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546268792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:03:29,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:03:29,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:03:29,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285804126] [2022-01-11 06:03:29,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:03:29,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:03:29,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:03:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:03:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:03:29,619 INFO L87 Difference]: Start difference. First operand has 40 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-11 06:03:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:03:30,086 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2022-01-11 06:03:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 06:03:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-01-11 06:03:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:03:30,101 INFO L225 Difference]: With dead ends: 73 [2022-01-11 06:03:30,101 INFO L226 Difference]: Without dead ends: 34 [2022-01-11 06:03:30,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-11 06:03:30,110 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 37 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:03:30,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 129 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:03:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-11 06:03:30,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-11 06:03:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-11 06:03:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-01-11 06:03:30,154 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 18 [2022-01-11 06:03:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:03:30,155 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-01-11 06:03:30,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-11 06:03:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-01-11 06:03:30,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-11 06:03:30,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:03:30,159 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:03:30,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:03:30,160 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:03:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:03:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1971733309, now seen corresponding path program 1 times [2022-01-11 06:03:30,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:03:30,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571273501] [2022-01-11 06:03:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:03:30,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:03:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 06:03:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-11 06:03:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-11 06:03:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:30,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-11 06:03:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 06:03:30,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:03:30,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571273501] [2022-01-11 06:03:30,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571273501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:03:30,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:03:30,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 06:03:30,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399343175] [2022-01-11 06:03:30,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:03:30,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 06:03:30,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:03:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 06:03:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 06:03:30,402 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-11 06:03:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:03:30,652 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2022-01-11 06:03:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:03:30,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2022-01-11 06:03:30,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:03:30,654 INFO L225 Difference]: With dead ends: 47 [2022-01-11 06:03:30,654 INFO L226 Difference]: Without dead ends: 36 [2022-01-11 06:03:30,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-11 06:03:30,655 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:03:30,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 119 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:03:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-11 06:03:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-11 06:03:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-11 06:03:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-01-11 06:03:30,664 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 28 [2022-01-11 06:03:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:03:30,664 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-01-11 06:03:30,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-11 06:03:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-01-11 06:03:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 06:03:30,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:03:30,666 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:03:30,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:03:30,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:03:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:03:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1846187095, now seen corresponding path program 1 times [2022-01-11 06:03:30,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:03:30,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344275257] [2022-01-11 06:03:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:03:30,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:03:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 06:03:30,808 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-11 06:03:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 06:03:30,937 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-11 06:03:30,938 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-11 06:03:30,940 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location checkErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-11 06:03:30,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:03:30,944 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-11 06:03:30,947 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 06:03:31,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:03:31 BasicIcfg [2022-01-11 06:03:31,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-11 06:03:31,027 INFO L158 Benchmark]: Toolchain (without parser) took 3020.62ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 125.9MB in the beginning and 85.0MB in the end (delta: 40.9MB). Peak memory consumption was 105.7MB. Max. memory is 8.0GB. [2022-01-11 06:03:31,028 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 06:03:31,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.77ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 125.7MB in the beginning and 217.1MB in the end (delta: -91.4MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-01-11 06:03:31,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.43ms. Allocated memory is still 243.3MB. Free memory was 217.1MB in the beginning and 215.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 06:03:31,036 INFO L158 Benchmark]: Boogie Preprocessor took 24.24ms. Allocated memory is still 243.3MB. Free memory was 215.5MB in the beginning and 214.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 06:03:31,037 INFO L158 Benchmark]: RCFGBuilder took 451.28ms. Allocated memory is still 243.3MB. Free memory was 213.9MB in the beginning and 201.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-11 06:03:31,037 INFO L158 Benchmark]: IcfgTransformer took 138.61ms. Allocated memory is still 243.3MB. Free memory was 201.4MB in the beginning and 196.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-11 06:03:31,037 INFO L158 Benchmark]: TraceAbstraction took 2090.06ms. Allocated memory is still 243.3MB. Free memory was 196.1MB in the beginning and 85.0MB in the end (delta: 111.2MB). Peak memory consumption was 111.1MB. Max. memory is 8.0GB. [2022-01-11 06:03:31,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.77ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 125.7MB in the beginning and 217.1MB in the end (delta: -91.4MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.43ms. Allocated memory is still 243.3MB. Free memory was 217.1MB in the beginning and 215.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.24ms. Allocated memory is still 243.3MB. Free memory was 215.5MB in the beginning and 214.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 451.28ms. Allocated memory is still 243.3MB. Free memory was 213.9MB in the beginning and 201.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 138.61ms. Allocated memory is still 243.3MB. Free memory was 201.4MB in the beginning and 196.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 2090.06ms. Allocated memory is still 243.3MB. Free memory was 196.1MB in the beginning and 85.0MB in the end (delta: 111.2MB). Peak memory consumption was 111.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L60] CALL, EXPR nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); [L24] n->data = __VERIFIER_nondet_int() [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L25] RET, EXPR nondet_tree() VAL [n={-2:0}, nondet_tree()={0:0}] [L25] n->left = nondet_tree() [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L26] RET, EXPR nondet_tree() VAL [n={-2:0}, nondet_tree()={0:0}] [L26] n->right = nondet_tree() [L27] return n; VAL [\result={-2:0}, n={-2:0}] [L60] RET, EXPR nondet_tree() VAL [nondet_tree()={-2:0}] [L60] CALL task(nondet_tree()) [L55] CALL, EXPR max(n) VAL [n={-2:0}] [L32] COND FALSE !(!n) [L35] EXPR n->left VAL [n={-2:0}, n={-2:0}, n->left={0:0}] [L35] CALL, EXPR max(n->left) VAL [n={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L35] RET, EXPR max(n->left) VAL [max(n->left)=-2147483648, n={-2:0}, n={-2:0}, n->left={0:0}] [L35] int a = max(n->left); [L36] EXPR n->right VAL [a=2147483648, n={-2:0}, n={-2:0}, n->right={0:0}] [L36] CALL, EXPR max(n->right) VAL [n={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L36] RET, EXPR max(n->right) VAL [a=2147483648, max(n->right)=-2147483648, n={-2:0}, n={-2:0}, n->right={0:0}] [L36] int b = max(n->right); [L37] COND TRUE a >= b [L37] return a; VAL [\result=-2147483648, a=2147483648, b=2147483648, n={-2:0}, n={-2:0}] [L55] RET, EXPR max(n) VAL [max(n)=-2147483648, n={-2:0}, n={-2:0}] [L55] int a = max(n); [L56] CALL check(n, a) [L43] COND TRUE \read(*n) [L44] EXPR n->data [L44] CALL __VERIFIER_assert(n->data <= a) [L11] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 248 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 180 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 363 IncrementalHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 68 mSDtfsCounter, 363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 9/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-11 06:03:31,072 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...