/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 20:34:37,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 20:34:37,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 20:34:37,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 20:34:37,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 20:34:37,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 20:34:37,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 20:34:37,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 20:34:37,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 20:34:37,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 20:34:37,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 20:34:37,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 20:34:37,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 20:34:37,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 20:34:37,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 20:34:37,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 20:34:37,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 20:34:37,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 20:34:37,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 20:34:37,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 20:34:37,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 20:34:37,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 20:34:37,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 20:34:37,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 20:34:37,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 20:34:37,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 20:34:37,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 20:34:37,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 20:34:37,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 20:34:37,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 20:34:37,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 20:34:37,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 20:34:37,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 20:34:37,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 20:34:37,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 20:34:37,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 20:34:37,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 20:34:37,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 20:34:37,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 20:34:37,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 20:34:37,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 20:34:37,687 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 20:34:37,711 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 20:34:37,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 20:34:37,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 20:34:37,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 20:34:37,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 20:34:37,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 20:34:37,718 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 20:34:37,718 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 20:34:37,719 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 20:34:37,719 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 20:34:37,719 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 20:34:37,719 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 20:34:37,719 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 20:34:37,719 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 20:34:37,719 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 20:34:37,719 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 20:34:37,720 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 20:34:37,720 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 20:34:37,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 20:34:37,721 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 20:34:37,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 20:34:37,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 20:34:37,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 20:34:37,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 20:34:37,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 20:34:37,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 20:34:37,722 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 20:34:37,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 20:34:37,723 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 20:34:37,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 20:34:37,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 20:34:37,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 20:34:37,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 20:34:37,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 20:34:37,724 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 20:34:37,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 20:34:37,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 20:34:37,724 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 20:34:37,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 20:34:37,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 20:34:37,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 20:34:37,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 20:34:37,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 20:34:37,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 20:34:37,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 20:34:37,995 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 20:34:37,996 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 20:34:37,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2023-03-31 20:34:39,173 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 20:34:39,348 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 20:34:39,348 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2023-03-31 20:34:39,353 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0df1aa88f/e34ebc40d93b4dfe9579c47411c60d93/FLAGfbc046257 [2023-03-31 20:34:39,365 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0df1aa88f/e34ebc40d93b4dfe9579c47411c60d93 [2023-03-31 20:34:39,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 20:34:39,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 20:34:39,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 20:34:39,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 20:34:39,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 20:34:39,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e58579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39, skipping insertion in model container [2023-03-31 20:34:39,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 20:34:39,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 20:34:39,512 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_24-1.i[848,861] [2023-03-31 20:34:39,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 20:34:39,546 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 20:34:39,558 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_24-1.i[848,861] [2023-03-31 20:34:39,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 20:34:39,584 INFO L208 MainTranslator]: Completed translation [2023-03-31 20:34:39,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39 WrapperNode [2023-03-31 20:34:39,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 20:34:39,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 20:34:39,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 20:34:39,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 20:34:39,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,627 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 20:34:39,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 20:34:39,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 20:34:39,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 20:34:39,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (1/1) ... [2023-03-31 20:34:39,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 20:34:39,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:34:39,666 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) [2023-03-31 20:34:39,668 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 [2023-03-31 20:34:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 20:34:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 20:34:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 20:34:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 20:34:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2023-03-31 20:34:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2023-03-31 20:34:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 20:34:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 20:34:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 20:34:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 20:34:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 20:34:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 20:34:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 20:34:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 20:34:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 20:34:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 20:34:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 20:34:39,756 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 20:34:39,758 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 20:34:39,885 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 20:34:39,914 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 20:34:39,915 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-31 20:34:39,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 08:34:39 BoogieIcfgContainer [2023-03-31 20:34:39,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 20:34:39,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 20:34:39,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 20:34:39,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 20:34:39,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 08:34:39" (1/3) ... [2023-03-31 20:34:39,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545cd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 08:34:39, skipping insertion in model container [2023-03-31 20:34:39,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:34:39" (2/3) ... [2023-03-31 20:34:39,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545cd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 08:34:39, skipping insertion in model container [2023-03-31 20:34:39,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 08:34:39" (3/3) ... [2023-03-31 20:34:39,924 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2023-03-31 20:34:39,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 20:34:39,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 20:34:39,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 20:34:39,982 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3940d1f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 20:34:39,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 20:34:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 20:34:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 20:34:39,992 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:34:39,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:34:39,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:34:39,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:34:39,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1582215698, now seen corresponding path program 1 times [2023-03-31 20:34:40,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:34:40,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571686939] [2023-03-31 20:34:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:34:40,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:34:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:34:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 20:34:40,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:34:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571686939] [2023-03-31 20:34:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571686939] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 20:34:40,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 20:34:40,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 20:34:40,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778882372] [2023-03-31 20:34:40,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 20:34:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 20:34:40,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:34:40,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 20:34:40,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 20:34:40,451 INFO L87 Difference]: Start difference. First operand has 33 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:34:40,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:34:40,581 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2023-03-31 20:34:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 20:34:40,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 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 14 [2023-03-31 20:34:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:34:40,591 INFO L225 Difference]: With dead ends: 74 [2023-03-31 20:34:40,591 INFO L226 Difference]: Without dead ends: 41 [2023-03-31 20:34:40,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 20:34:40,600 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:34:40,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:34:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-03-31 20:34:40,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2023-03-31 20:34:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 20:34:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2023-03-31 20:34:40,645 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 14 [2023-03-31 20:34:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:34:40,646 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2023-03-31 20:34:40,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:34:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2023-03-31 20:34:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 20:34:40,648 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:34:40,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:34:40,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 20:34:40,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:34:40,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:34:40,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1412027896, now seen corresponding path program 1 times [2023-03-31 20:34:40,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:34:40,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665297011] [2023-03-31 20:34:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:34:40,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:34:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:34:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:34:41,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:34:41,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665297011] [2023-03-31 20:34:41,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665297011] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 20:34:41,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 20:34:41,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 20:34:41,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713261965] [2023-03-31 20:34:41,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 20:34:41,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 20:34:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:34:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 20:34:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 20:34:41,172 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:34:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:34:41,296 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-03-31 20:34:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 20:34:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 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 15 [2023-03-31 20:34:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:34:41,299 INFO L225 Difference]: With dead ends: 38 [2023-03-31 20:34:41,300 INFO L226 Difference]: Without dead ends: 36 [2023-03-31 20:34:41,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-03-31 20:34:41,307 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:34:41,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 145 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:34:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-03-31 20:34:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-03-31 20:34:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 20:34:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-03-31 20:34:41,314 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 15 [2023-03-31 20:34:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:34:41,314 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-03-31 20:34:41,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:34:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-03-31 20:34:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 20:34:41,315 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:34:41,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:34:41,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 20:34:41,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:34:41,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:34:41,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1343893134, now seen corresponding path program 1 times [2023-03-31 20:34:41,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:34:41,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988633145] [2023-03-31 20:34:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:34:41,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:34:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:34:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 20:34:41,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:34:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988633145] [2023-03-31 20:34:41,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988633145] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 20:34:41,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 20:34:41,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 20:34:41,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983776174] [2023-03-31 20:34:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 20:34:41,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 20:34:41,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:34:41,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 20:34:41,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 20:34:41,767 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:34:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:34:41,860 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2023-03-31 20:34:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 20:34:41,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 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 19 [2023-03-31 20:34:41,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:34:41,861 INFO L225 Difference]: With dead ends: 36 [2023-03-31 20:34:41,862 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 20:34:41,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-03-31 20:34:41,863 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:34:41,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:34:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 20:34:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 20:34:41,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-03-31 20:34:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 20:34:41,865 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2023-03-31 20:34:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:34:41,865 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 20:34:41,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:34:41,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 20:34:41,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 20:34:41,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 20:34:41,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 20:34:41,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 20:34:41,915 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-03-31 20:34:41,915 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-03-31 20:34:41,915 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 21 47) no Hoare annotation was computed. [2023-03-31 20:34:41,915 INFO L902 garLoopResultBuilder]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2023-03-31 20:34:41,915 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (<= |main_#t~mem6| (* (div |main_#t~mem6| 2) 2)) [2023-03-31 20:34:41,916 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2023-03-31 20:34:41,917 INFO L899 garLoopResultBuilder]: For program point L32-2(lines 32 38) no Hoare annotation was computed. [2023-03-31 20:34:41,917 INFO L902 garLoopResultBuilder]: At program point L32-3(lines 32 38) the Hoare annotation is: true [2023-03-31 20:34:41,917 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 44) no Hoare annotation was computed. [2023-03-31 20:34:41,918 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 21 47) the Hoare annotation is: true [2023-03-31 20:34:41,918 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 37) no Hoare annotation was computed. [2023-03-31 20:34:41,918 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 (+ |main_#t~mem9| 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2023-03-31 20:34:41,918 INFO L899 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2023-03-31 20:34:41,919 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 45) no Hoare annotation was computed. [2023-03-31 20:34:41,919 INFO L902 garLoopResultBuilder]: At program point L39-3(lines 39 45) the Hoare annotation is: true [2023-03-31 20:34:41,919 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 20:34:41,919 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 20:34:41,919 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 20) the Hoare annotation is: true [2023-03-31 20:34:41,919 INFO L899 garLoopResultBuilder]: For program point printOddFINAL(lines 18 20) no Hoare annotation was computed. [2023-03-31 20:34:41,920 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (or (not (= printOdd_~i (* (div printOdd_~i 2) 2))) (let ((.cse0 (+ 1 |printOdd_#in~i|))) (< (* (div .cse0 2) 2) .cse0))) [2023-03-31 20:34:41,920 INFO L899 garLoopResultBuilder]: For program point printOddEXIT(lines 18 20) no Hoare annotation was computed. [2023-03-31 20:34:41,920 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 20:34:41,920 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 20:34:41,920 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 20:34:41,920 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 20:34:41,920 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (or (<= printEven_~i (* (div printEven_~i 2) 2)) (< (* 2 (div |printEven_#in~i| 2)) |printEven_#in~i|)) [2023-03-31 20:34:41,920 INFO L899 garLoopResultBuilder]: For program point printEvenEXIT(lines 15 17) no Hoare annotation was computed. [2023-03-31 20:34:41,920 INFO L899 garLoopResultBuilder]: For program point printEvenFINAL(lines 15 17) no Hoare annotation was computed. [2023-03-31 20:34:41,921 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 17) the Hoare annotation is: true [2023-03-31 20:34:41,921 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2023-03-31 20:34:41,921 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-03-31 20:34:41,921 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2023-03-31 20:34:41,922 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 14) no Hoare annotation was computed. [2023-03-31 20:34:41,923 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 14) the Hoare annotation is: true [2023-03-31 20:34:41,924 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-03-31 20:34:41,930 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 20:34:41,932 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 20:34:41,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 08:34:41 BoogieIcfgContainer [2023-03-31 20:34:41,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 20:34:41,940 INFO L158 Benchmark]: Toolchain (without parser) took 2566.85ms. Allocated memory was 252.7MB in the beginning and 465.6MB in the end (delta: 212.9MB). Free memory was 200.4MB in the beginning and 349.8MB in the end (delta: -149.4MB). Peak memory consumption was 64.5MB. Max. memory is 8.0GB. [2023-03-31 20:34:41,941 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 252.7MB. Free memory is still 203.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 20:34:41,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.37ms. Allocated memory is still 252.7MB. Free memory was 199.9MB in the beginning and 189.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 20:34:41,941 INFO L158 Benchmark]: Boogie Preprocessor took 42.77ms. Allocated memory is still 252.7MB. Free memory was 189.9MB in the beginning and 188.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 20:34:41,941 INFO L158 Benchmark]: RCFGBuilder took 286.64ms. Allocated memory is still 252.7MB. Free memory was 187.8MB in the beginning and 174.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-03-31 20:34:41,942 INFO L158 Benchmark]: TraceAbstraction took 2020.93ms. Allocated memory was 252.7MB in the beginning and 465.6MB in the end (delta: 212.9MB). Free memory was 173.1MB in the beginning and 349.8MB in the end (delta: -176.7MB). Peak memory consumption was 37.2MB. Max. memory is 8.0GB. [2023-03-31 20:34:41,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 252.7MB. Free memory is still 203.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.37ms. Allocated memory is still 252.7MB. Free memory was 199.9MB in the beginning and 189.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.77ms. Allocated memory is still 252.7MB. Free memory was 189.9MB in the beginning and 188.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 286.64ms. Allocated memory is still 252.7MB. Free memory was 187.8MB in the beginning and 174.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2020.93ms. Allocated memory was 252.7MB in the beginning and 465.6MB in the end (delta: 212.9MB). Free memory was 173.1MB in the beginning and 349.8MB in the end (delta: -176.7MB). Peak memory consumption was 37.2MB. 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 351 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 202 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 78 mSDtfsCounter, 202 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, InterpolantAutomatonStates: 22, 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, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 21 PreInvPairs, 29 NumberOfFragments, 63 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 56 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-03-31 20:34:41,960 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...