/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 04:53:29,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 04:53:29,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 04:53:29,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 04:53:29,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 04:53:29,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 04:53:29,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 04:53:29,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 04:53:29,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 04:53:29,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 04:53:29,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 04:53:29,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 04:53:29,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 04:53:29,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 04:53:29,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 04:53:29,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 04:53:29,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 04:53:29,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 04:53:29,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 04:53:29,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 04:53:29,695 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 04:53:29,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 04:53:29,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 04:53:29,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 04:53:29,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 04:53:29,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-05 04:53:29,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-05 04:53:29,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-05 04:53:29,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-05 04:53:29,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-05 04:53:29,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-05 04:53:29,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-05 04:53:29,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-05 04:53:29,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-05 04:53:29,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-05 04:53:29,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-05 04:53:29,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-05 04:53:29,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-05 04:53:29,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-05 04:53:29,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 04:53:29,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 04:53:29,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 04:53:29,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-05 04:53:29,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 04:53:29,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 04:53:29,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 04:53:29,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 04:53:29,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 04:53:29,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 04:53:29,724 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 04:53:29,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 04:53:29,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 04:53:29,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 04:53:29,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 04:53:29,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 04:53:29,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 04:53:29,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 04:53:29,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 04:53:29,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 04:53:29,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 04:53:29,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 04:53:29,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 04:53:29,727 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 04:53:29,727 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 04:53:29,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 04:53:29,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 04:53:29,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 04:53:29,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 04:53:29,943 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 04:53:29,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2022-04-05 04:53:29,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d179129f/461c063477924ce89cd293bda2a9bd85/FLAG8333893d1 [2022-04-05 04:53:30,339 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 04:53:30,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2022-04-05 04:53:30,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d179129f/461c063477924ce89cd293bda2a9bd85/FLAG8333893d1 [2022-04-05 04:53:30,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d179129f/461c063477924ce89cd293bda2a9bd85 [2022-04-05 04:53:30,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 04:53:30,353 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 04:53:30,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 04:53:30,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 04:53:30,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 04:53:30,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62468549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30, skipping insertion in model container [2022-04-05 04:53:30,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 04:53:30,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 04:53:30,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i[825,838] [2022-04-05 04:53:30,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 04:53:30,498 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 04:53:30,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i[825,838] [2022-04-05 04:53:30,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 04:53:30,517 INFO L208 MainTranslator]: Completed translation [2022-04-05 04:53:30,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30 WrapperNode [2022-04-05 04:53:30,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 04:53:30,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 04:53:30,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 04:53:30,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 04:53:30,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 04:53:30,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 04:53:30,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 04:53:30,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 04:53:30,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 04:53:30,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:53:30,559 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) [2022-04-05 04:53:30,568 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 [2022-04-05 04:53:30,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 04:53:30,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 04:53:30,586 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 04:53:30,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 04:53:30,587 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2022-04-05 04:53:30,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 04:53:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 04:53:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-05 04:53:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 04:53:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 04:53:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 04:53:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 04:53:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 04:53:30,631 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 04:53:30,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 04:53:30,726 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 04:53:30,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 04:53:30,742 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 04:53:30,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:53:30 BoogieIcfgContainer [2022-04-05 04:53:30,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 04:53:30,744 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 04:53:30,744 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 04:53:30,749 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 04:53:30,751 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:53:30" (1/1) ... [2022-04-05 04:53:30,753 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 04:53:30,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 04:53:30 BasicIcfg [2022-04-05 04:53:30,763 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 04:53:30,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 04:53:30,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 04:53:30,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 04:53:30,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 04:53:30" (1/4) ... [2022-04-05 04:53:30,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fddc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:53:30, skipping insertion in model container [2022-04-05 04:53:30,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:53:30" (2/4) ... [2022-04-05 04:53:30,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fddc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:53:30, skipping insertion in model container [2022-04-05 04:53:30,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:53:30" (3/4) ... [2022-04-05 04:53:30,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fddc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 04:53:30, skipping insertion in model container [2022-04-05 04:53:30,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 04:53:30" (4/4) ... [2022-04-05 04:53:30,781 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.iqvasr [2022-04-05 04:53:30,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 04:53:30,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 04:53:30,857 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 04:53:30,861 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-05 04:53:30,862 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 04:53:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 04:53:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-05 04:53:30,895 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:53:30,896 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:53:30,896 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:53:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:53:30,900 INFO L85 PathProgramCache]: Analyzing trace with hash 612194795, now seen corresponding path program 1 times [2022-04-05 04:53:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:53:30,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786579101] [2022-04-05 04:53:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:53:30,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:53:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:53:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:53:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:53:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:53:31,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:53:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786579101] [2022-04-05 04:53:31,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786579101] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:53:31,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:53:31,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 04:53:31,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760832713] [2022-04-05 04:53:31,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:53:31,182 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:53:31,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:53:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:53:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-04-05 04:53:31,212 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 04:53:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:53:31,402 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-04-05 04:53:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 04:53:31,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-05 04:53:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:53:31,410 INFO L225 Difference]: With dead ends: 55 [2022-04-05 04:53:31,410 INFO L226 Difference]: Without dead ends: 26 [2022-04-05 04:53:31,413 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-05 04:53:31,416 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:53:31,417 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 57 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:53:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-05 04:53:31,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-04-05 04:53:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 04:53:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-04-05 04:53:31,445 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2022-04-05 04:53:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:53:31,445 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-04-05 04:53:31,445 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 04:53:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-04-05 04:53:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-05 04:53:31,446 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:53:31,446 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:53:31,447 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 04:53:31,447 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:53:31,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:53:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1895818048, now seen corresponding path program 1 times [2022-04-05 04:53:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:53:31,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116795524] [2022-04-05 04:53:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:53:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:53:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:53:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:53:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:53:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 04:53:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:53:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:53:31,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:53:31,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116795524] [2022-04-05 04:53:31,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116795524] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 04:53:31,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585331163] [2022-04-05 04:53:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:53:31,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:53:31,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:53:31,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 04:53:31,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 04:53:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:53:31,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-05 04:53:31,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:53:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:53:31,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:53:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:53:31,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585331163] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 04:53:31,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 04:53:31,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2022-04-05 04:53:31,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519942392] [2022-04-05 04:53:31,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 04:53:31,980 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 04:53:31,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:53:31,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 04:53:31,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-04-05 04:53:31,981 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 04:53:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:53:32,228 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-04-05 04:53:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 04:53:32,228 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-04-05 04:53:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:53:32,230 INFO L225 Difference]: With dead ends: 36 [2022-04-05 04:53:32,230 INFO L226 Difference]: Without dead ends: 34 [2022-04-05 04:53:32,231 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-04-05 04:53:32,233 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:53:32,233 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 35 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:53:32,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-05 04:53:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-04-05 04:53:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 04:53:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2022-04-05 04:53:32,246 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2022-04-05 04:53:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:53:32,246 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2022-04-05 04:53:32,246 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 04:53:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2022-04-05 04:53:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 04:53:32,247 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:53:32,248 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:53:32,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 04:53:32,456 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:53:32,457 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:53:32,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:53:32,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1869530475, now seen corresponding path program 2 times [2022-04-05 04:53:32,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:53:32,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110840009] [2022-04-05 04:53:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:53:32,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:53:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 04:53:32,479 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 04:53:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 04:53:32,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 04:53:32,505 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 04:53:32,506 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 04:53:32,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 04:53:32,509 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1] [2022-04-05 04:53:32,511 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 04:53:32,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 04:53:32 BasicIcfg [2022-04-05 04:53:32,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 04:53:32,532 INFO L158 Benchmark]: Toolchain (without parser) took 2178.59ms. Allocated memory was 187.7MB in the beginning and 245.4MB in the end (delta: 57.7MB). Free memory was 134.5MB in the beginning and 210.7MB in the end (delta: -76.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 04:53:32,532 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory was 151.1MB in the beginning and 151.0MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 04:53:32,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.68ms. Allocated memory was 187.7MB in the beginning and 245.4MB in the end (delta: 57.7MB). Free memory was 134.2MB in the beginning and 221.6MB in the end (delta: -87.4MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-04-05 04:53:32,533 INFO L158 Benchmark]: Boogie Preprocessor took 19.45ms. Allocated memory is still 245.4MB. Free memory was 221.6MB in the beginning and 220.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 04:53:32,533 INFO L158 Benchmark]: RCFGBuilder took 205.57ms. Allocated memory is still 245.4MB. Free memory was 220.0MB in the beginning and 209.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 04:53:32,533 INFO L158 Benchmark]: IcfgTransformer took 18.53ms. Allocated memory is still 245.4MB. Free memory was 209.0MB in the beginning and 208.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 04:53:32,533 INFO L158 Benchmark]: TraceAbstraction took 1754.43ms. Allocated memory is still 245.4MB. Free memory was 207.5MB in the beginning and 210.7MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 04:53:32,541 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 187.7MB. Free memory was 151.1MB in the beginning and 151.0MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 163.68ms. Allocated memory was 187.7MB in the beginning and 245.4MB in the end (delta: 57.7MB). Free memory was 134.2MB in the beginning and 221.6MB in the end (delta: -87.4MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.45ms. Allocated memory is still 245.4MB. Free memory was 221.6MB in the beginning and 220.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 205.57ms. Allocated memory is still 245.4MB. Free memory was 220.0MB in the beginning and 209.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 18.53ms. Allocated memory is still 245.4MB. Free memory was 209.0MB in the beginning and 208.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1754.43ms. Allocated memory is still 245.4MB. Free memory was 207.5MB in the beginning and 210.7MB in the end (delta: -3.3MB). 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: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] Char *tmp; VAL [\old(tmp)=52, \old(tmp)=50, tmp={0:0}] [L40] Char pathbuf[1 +1]; [L42] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L44] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 VAL [\old(tmp)=0, \old(tmp)=0, bound={3:28}, pathbuf={3:0}, tmp={3:4}] [L46] CALL glob2 (pathbuf, bound) VAL [\old(tmp)=0, \old(tmp)=0, pathbuf={3:0}, pathlim={3:28}, tmp={3:4}] [L27] Char *p; [L29] p = pathbuf VAL [\old(tmp)=0, \old(tmp)=0, p={3:0}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={3:0}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L31] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={3:4}] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={3:4}] [L31] RET __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={3:0}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L32] *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={3:0}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={3:4}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={3:4}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L31] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={3:4}] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={3:4}] [L31] RET __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={3:4}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L32] *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={3:4}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={3:8}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={3:8}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L31] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, tmp={3:4}] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={3:4}] [L16] reach_error() VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={3:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 81 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 27 mSDtfsCounter, 179 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 6 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 6/12 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! [2022-04-05 04:53:32,569 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...