/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/list-properties/alternating_list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:18:35,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:18:35,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:18:35,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:18:35,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:18:35,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:18:35,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:18:35,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:18:35,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:18:35,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:18:35,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:18:35,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:18:35,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:18:35,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:18:35,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:18:35,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:18:35,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:18:35,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:18:35,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:18:35,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:18:35,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:18:35,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:18:35,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:18:35,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:18:35,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:18:35,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:18:35,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:18:35,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:18:35,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:18:35,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:18:35,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:18:35,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:18:35,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:18:35,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:18:35,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:18:35,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:18:35,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:18:35,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:18:35,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:18:35,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:18:35,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:18:35,523 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 05:18:35,549 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:18:35,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:18:35,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:18:35,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:18:35,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:18:35,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:18:35,551 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:18:35,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:18:35,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:18:35,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:18:35,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:18:35,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:18:35,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:18:35,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:18:35,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:18:35,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:18:35,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:18:35,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:18:35,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:18:35,554 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:18:35,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:18:35,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:18:35,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:18:35,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:18:35,555 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:18:35,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:18:35,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:18:35,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:18:35,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:18:35,776 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:18:35,778 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:18:35,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/alternating_list-2.i [2022-01-11 05:18:35,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb145b6e/585be31817754b5181d1c160c8b08aea/FLAG2d3d05134 [2022-01-11 05:18:36,278 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:18:36,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/alternating_list-2.i [2022-01-11 05:18:36,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb145b6e/585be31817754b5181d1c160c8b08aea/FLAG2d3d05134 [2022-01-11 05:18:36,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb145b6e/585be31817754b5181d1c160c8b08aea [2022-01-11 05:18:36,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:18:36,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:18:36,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:18:36,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:18:36,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:18:36,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3586a9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36, skipping insertion in model container [2022-01-11 05:18:36,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:18:36,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:18:36,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/alternating_list-2.i[23574,23587] [2022-01-11 05:18:36,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:18:36,666 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:18:36,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/alternating_list-2.i[23574,23587] [2022-01-11 05:18:36,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:18:36,740 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:18:36,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36 WrapperNode [2022-01-11 05:18:36,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:18:36,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:18:36,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:18:36,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:18:36,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,779 INFO L137 Inliner]: procedures = 127, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-01-11 05:18:36,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:18:36,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:18:36,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:18:36,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:18:36,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:18:36,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:18:36,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:18:36,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:18:36,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (1/1) ... [2022-01-11 05:18:36,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:18:36,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:18:36,867 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 05:18:36,881 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 05:18:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 05:18:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-11 05:18:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:18:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-11 05:18:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-11 05:18:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 05:18:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 05:18:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:18:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:18:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:18:37,006 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:18:37,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:18:37,161 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:18:37,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:18:37,166 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-11 05:18:37,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:18:37 BoogieIcfgContainer [2022-01-11 05:18:37,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:18:37,179 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:18:37,179 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:18:37,200 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:18:37,202 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:18:37" (1/1) ... [2022-01-11 05:18:37,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:18:37 BasicIcfg [2022-01-11 05:18:37,282 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:18:37,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:18:37,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:18:37,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:18:37,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:18:36" (1/4) ... [2022-01-11 05:18:37,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c8b4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:18:37, skipping insertion in model container [2022-01-11 05:18:37,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:18:36" (2/4) ... [2022-01-11 05:18:37,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c8b4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:18:37, skipping insertion in model container [2022-01-11 05:18:37,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:18:37" (3/4) ... [2022-01-11 05:18:37,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c8b4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:18:37, skipping insertion in model container [2022-01-11 05:18:37,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:18:37" (4/4) ... [2022-01-11 05:18:37,289 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-2.iTransformedIcfg [2022-01-11 05:18:37,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:18:37,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 05:18:37,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:18:37,343 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 05:18:37,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 05:18:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.52) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:18:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 05:18:37,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:18:37,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:18:37,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:18:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:18:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1665253908, now seen corresponding path program 1 times [2022-01-11 05:18:37,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:18:37,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566523410] [2022-01-11 05:18:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:18:37,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:18:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:18:37,540 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 05:18:37,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:18:37,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566523410] [2022-01-11 05:18:37,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566523410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:18:37,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:18:37,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:18:37,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261094994] [2022-01-11 05:18:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:18:37,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:18:37,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:18:37,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:18:37,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:18:37,571 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.52) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:18:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:18:37,585 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2022-01-11 05:18:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:18:37,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 05:18:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:18:37,591 INFO L225 Difference]: With dead ends: 43 [2022-01-11 05:18:37,594 INFO L226 Difference]: Without dead ends: 18 [2022-01-11 05:18:37,596 INFO L932 BasicCegarLoop]: 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 [2022-01-11 05:18:37,599 INFO L933 BasicCegarLoop]: 34 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, 34 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 [2022-01-11 05:18:37,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:18:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-11 05:18:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-11 05:18:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:18:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-01-11 05:18:37,623 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-01-11 05:18:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:18:37,624 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-01-11 05:18:37,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:18:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-01-11 05:18:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 05:18:37,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:18:37,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:18:37,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:18:37,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:18:37,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:18:37,628 INFO L85 PathProgramCache]: Analyzing trace with hash -777750227, now seen corresponding path program 1 times [2022-01-11 05:18:37,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:18:37,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923503721] [2022-01-11 05:18:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:18:37,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:18:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:18:37,813 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 05:18:37,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:18:37,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923503721] [2022-01-11 05:18:37,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923503721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:18:37,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:18:37,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:18:37,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350205941] [2022-01-11 05:18:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:18:37,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:18:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:18:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:18:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:18:37,817 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:18:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:18:37,926 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-01-11 05:18:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:18:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 05:18:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:18:37,927 INFO L225 Difference]: With dead ends: 42 [2022-01-11 05:18:37,927 INFO L226 Difference]: Without dead ends: 31 [2022-01-11 05:18:37,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:18:37,928 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:18:37,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:18:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-11 05:18:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2022-01-11 05:18:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:18:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-11 05:18:37,934 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2022-01-11 05:18:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:18:37,934 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-11 05:18:37,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:18:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-11 05:18:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 05:18:37,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:18:37,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:18:37,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:18:37,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:18:37,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:18:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1667361497, now seen corresponding path program 1 times [2022-01-11 05:18:37,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:18:37,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206966301] [2022-01-11 05:18:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:18:37,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:18:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 05:18:38,026 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-11 05:18:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 05:18:38,102 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-11 05:18:38,102 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-11 05:18:38,104 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-11 05:18:38,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:18:38,109 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-11 05:18:38,111 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 05:18:38,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:18:38 BasicIcfg [2022-01-11 05:18:38,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-11 05:18:38,157 INFO L158 Benchmark]: Toolchain (without parser) took 1841.46ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 126.2MB in the beginning and 177.3MB in the end (delta: -51.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 05:18:38,157 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory was 143.7MB in the beginning and 143.6MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 05:18:38,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.80ms. Allocated memory is still 177.2MB. Free memory was 126.1MB in the beginning and 146.5MB in the end (delta: -20.4MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-01-11 05:18:38,161 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.78ms. Allocated memory is still 177.2MB. Free memory was 146.2MB in the beginning and 144.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 05:18:38,162 INFO L158 Benchmark]: Boogie Preprocessor took 34.31ms. Allocated memory is still 177.2MB. Free memory was 144.4MB in the beginning and 142.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-11 05:18:38,162 INFO L158 Benchmark]: RCFGBuilder took 363.38ms. Allocated memory is still 177.2MB. Free memory was 142.7MB in the beginning and 129.4MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-11 05:18:38,162 INFO L158 Benchmark]: IcfgTransformer took 102.93ms. Allocated memory is still 177.2MB. Free memory was 129.4MB in the beginning and 124.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-11 05:18:38,163 INFO L158 Benchmark]: TraceAbstraction took 874.02ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 124.5MB in the beginning and 177.3MB in the end (delta: -52.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 05:18:38,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory was 143.7MB in the beginning and 143.6MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 422.80ms. Allocated memory is still 177.2MB. Free memory was 126.1MB in the beginning and 146.5MB in the end (delta: -20.4MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.78ms. Allocated memory is still 177.2MB. Free memory was 146.2MB in the beginning and 144.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.31ms. Allocated memory is still 177.2MB. Free memory was 144.4MB in the beginning and 142.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 363.38ms. Allocated memory is still 177.2MB. Free memory was 142.7MB in the beginning and 129.4MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 102.93ms. Allocated memory is still 177.2MB. Free memory was 129.4MB in the beginning and 124.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 874.02ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 124.5MB in the beginning and 177.3MB in the end (delta: -52.7MB). There was no memory consumed. 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: 573]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-3:0}, flag=1] [L535] List t; [L536] List p = a; VAL [a={-3:0}, flag=1, p={-3:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 2 [L540] flag = 0 VAL [a={-3:0}, flag=0, p={-3:0}] [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-3:0}, flag=0, p={-3:0}, t={-1:0}] [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] flag = 1 VAL [a={-3:0}, flag=1, p={-3:0}, t={-1:0}] [L553] EXPR p->h VAL [a={-3:0}, flag=1, p={-3:0}, p->h=-2, t={-1:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 [L556] EXPR p->h VAL [a={-3:0}, flag=0, p={-3:0}, p->h=-2, t={-1:0}] [L556] COND TRUE p->h != 1 [L573] reach_error() VAL [a={-3:0}, flag=0, p={-3:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 46 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 05:18:38,206 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...