/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 OctagonDomain -i ../sv-benchmarks/c/array-fpi/ifeqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 15:27:51,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 15:27:51,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 15:27:51,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 15:27:51,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 15:27:51,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 15:27:51,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 15:27:51,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 15:27:51,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 15:27:51,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 15:27:51,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 15:27:51,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 15:27:51,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 15:27:51,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 15:27:51,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 15:27:51,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 15:27:51,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 15:27:51,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 15:27:51,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 15:27:51,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 15:27:51,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 15:27:51,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 15:27:51,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 15:27:51,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 15:27:51,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 15:27:51,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 15:27:51,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 15:27:51,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 15:27:51,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 15:27:51,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 15:27:51,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 15:27:51,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 15:27:51,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 15:27:51,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 15:27:51,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 15:27:51,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 15:27:51,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 15:27:51,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 15:27:51,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 15:27:51,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 15:27:51,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 15:27:51,792 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 [2023-04-02 15:27:51,824 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 15:27:51,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 15:27:51,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 15:27:51,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 15:27:51,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 15:27:51,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 15:27:51,828 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 15:27:51,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 15:27:51,829 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 15:27:51,829 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 15:27:51,830 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 15:27:51,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 15:27:51,830 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 15:27:51,830 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 15:27:51,830 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 15:27:51,830 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 15:27:51,830 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 15:27:51,831 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 15:27:51,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 15:27:51,831 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 15:27:51,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 15:27:51,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 15:27:51,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 15:27:51,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 15:27:51,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:27:51,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 15:27:51,833 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 15:27:51,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 15:27:51,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 15:27:51,834 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 15:27:51,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 15:27:51,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 15:27:51,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 15:27:51,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 15:27:52,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 15:27:52,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 15:27:52,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 15:27:52,088 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 15:27:52,089 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 15:27:52,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn4f.c [2023-04-02 15:27:53,366 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 15:27:53,542 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 15:27:53,542 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn4f.c [2023-04-02 15:27:53,547 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eaf1c89f/4713f01e118340e7b088961a9ea4f1d4/FLAG67671dc3a [2023-04-02 15:27:53,562 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eaf1c89f/4713f01e118340e7b088961a9ea4f1d4 [2023-04-02 15:27:53,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 15:27:53,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 15:27:53,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 15:27:53,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 15:27:53,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 15:27:53,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bb434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53, skipping insertion in model container [2023-04-02 15:27:53,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 15:27:53,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 15:27:53,701 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-fpi/ifeqn4f.c[590,603] [2023-04-02 15:27:53,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:27:53,727 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 15:27:53,737 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-fpi/ifeqn4f.c[590,603] [2023-04-02 15:27:53,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:27:53,755 INFO L208 MainTranslator]: Completed translation [2023-04-02 15:27:53,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53 WrapperNode [2023-04-02 15:27:53,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 15:27:53,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 15:27:53,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 15:27:53,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 15:27:53,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,783 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 15:27:53,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 15:27:53,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 15:27:53,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 15:27:53,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (1/1) ... [2023-04-02 15:27:53,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:27:53,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:27:53,813 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) [2023-04-02 15:27:53,835 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 [2023-04-02 15:27:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 15:27:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 15:27:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 15:27:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 15:27:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 15:27:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 15:27:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 15:27:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 15:27:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 15:27:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 15:27:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 15:27:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 15:27:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 15:27:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 15:27:53,924 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 15:27:53,926 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 15:27:54,062 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 15:27:54,136 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 15:27:54,137 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-02 15:27:54,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:27:54 BoogieIcfgContainer [2023-04-02 15:27:54,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 15:27:54,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 15:27:54,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 15:27:54,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 15:27:54,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 03:27:53" (1/3) ... [2023-04-02 15:27:54,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8c102b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:27:54, skipping insertion in model container [2023-04-02 15:27:54,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:27:53" (2/3) ... [2023-04-02 15:27:54,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8c102b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:27:54, skipping insertion in model container [2023-04-02 15:27:54,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:27:54" (3/3) ... [2023-04-02 15:27:54,148 INFO L112 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2023-04-02 15:27:54,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 15:27:54,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 15:27:54,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 15:27:54,242 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;@5f40b0b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 15:27:54,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 15:27:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2023-04-02 15:27:54,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 15:27:54,251 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:27:54,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:27:54,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:27:54,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:27:54,256 INFO L85 PathProgramCache]: Analyzing trace with hash -329856190, now seen corresponding path program 1 times [2023-04-02 15:27:54,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:27:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6708038] [2023-04-02 15:27:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:27:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:27:54,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:27:54,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895047789] [2023-04-02 15:27:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:27:54,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:27:54,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:27:54,380 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) [2023-04-02 15:27:54,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 15:27:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:27:54,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 15:27:54,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:27:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 15:27:54,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 15:27:54,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:27:54,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6708038] [2023-04-02 15:27:54,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 15:27:54,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895047789] [2023-04-02 15:27:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895047789] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:27:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:27:54,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 15:27:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564342991] [2023-04-02 15:27:54,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:27:54,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 15:27:54,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:27:54,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 15:27:54,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 15:27:54,618 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 15:27:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:27:54,714 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-04-02 15:27:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 15:27:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-04-02 15:27:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:27:54,724 INFO L225 Difference]: With dead ends: 48 [2023-04-02 15:27:54,725 INFO L226 Difference]: Without dead ends: 26 [2023-04-02 15:27:54,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 15:27:54,732 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:27:54,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 39 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:27:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-02 15:27:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-04-02 15:27:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 15:27:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-04-02 15:27:54,781 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2023-04-02 15:27:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:27:54,781 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-04-02 15:27:54,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 15:27:54,782 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-04-02 15:27:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 15:27:54,784 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:27:54,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:27:54,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 15:27:54,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 15:27:54,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:27:54,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:27:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash 276511424, now seen corresponding path program 1 times [2023-04-02 15:27:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:27:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612628427] [2023-04-02 15:27:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:27:54,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:27:55,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:27:55,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976437654] [2023-04-02 15:27:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:27:55,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:27:55,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:27:55,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 15:27:55,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 15:27:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:27:55,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 15:27:55,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:27:55,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-02 15:27:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 15:27:55,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:27:55,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 15:27:55,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2023-04-02 15:27:55,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 15:27:55,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-04-02 15:27:55,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-04-02 15:27:55,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-04-02 15:27:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 15:27:55,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:27:55,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612628427] [2023-04-02 15:27:55,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 15:27:55,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976437654] [2023-04-02 15:27:55,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976437654] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:27:55,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1697868792] [2023-04-02 15:27:55,623 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 15:27:55,623 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:27:55,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:27:55,632 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:27:55,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:27:55,734 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs [2023-04-02 15:27:56,015 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-04-02 15:27:56,040 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 24 for LOIs [2023-04-02 15:27:56,049 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 15:27:56,056 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:27:56,777 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '310#(and (exists ((v_main_~b~0.base_BEFORE_CALL_1 Int)) (and (not (= (select (select |#memory_int| v_main_~b~0.base_BEFORE_CALL_1) 0) 1)) (<= (+ v_main_~b~0.base_BEFORE_CALL_1 1) |#StackHeapBarrier|))) (<= 1 |#StackHeapBarrier|) (<= ~N~0 2147483647) (<= 1 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 15:27:56,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:27:56,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 15:27:56,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-04-02 15:27:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970326985] [2023-04-02 15:27:56,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 15:27:56,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 15:27:56,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:27:56,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 15:27:56,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2023-04-02 15:27:56,781 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 15:27:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:27:56,957 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-04-02 15:27:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 15:27:56,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-04-02 15:27:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:27:56,958 INFO L225 Difference]: With dead ends: 32 [2023-04-02 15:27:56,958 INFO L226 Difference]: Without dead ends: 30 [2023-04-02 15:27:56,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 15:27:56,960 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:27:56,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 116 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:27:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-02 15:27:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-04-02 15:27:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 15:27:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-04-02 15:27:56,973 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 19 [2023-04-02 15:27:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:27:56,974 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-04-02 15:27:56,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 15:27:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-04-02 15:27:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 15:27:56,975 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:27:56,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:27:56,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 15:27:57,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 15:27:57,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:27:57,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:27:57,182 INFO L85 PathProgramCache]: Analyzing trace with hash -836154866, now seen corresponding path program 1 times [2023-04-02 15:27:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:27:57,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989036043] [2023-04-02 15:27:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:27:57,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:27:57,204 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:27:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215110946] [2023-04-02 15:27:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:27:57,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:27:57,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:27:57,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 15:27:57,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 15:27:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:27:57,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 15:27:57,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:27:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 15:27:57,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:27:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 15:27:57,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:27:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989036043] [2023-04-02 15:27:57,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 15:27:57,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215110946] [2023-04-02 15:27:57,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215110946] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:27:57,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [461928371] [2023-04-02 15:27:57,391 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 15:27:57,392 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:27:57,392 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:27:57,392 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:27:57,392 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:27:57,435 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs [2023-04-02 15:27:57,791 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 51 for LOIs [2023-04-02 15:27:57,833 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 24 for LOIs [2023-04-02 15:27:57,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 15:27:57,842 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:27:58,509 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '584#(and (<= 1 |#StackHeapBarrier|) (<= ~N~0 2147483647) (exists ((v_main_~i~0_BEFORE_CALL_9 Int) (v_main_~b~0.base_BEFORE_CALL_6 Int)) (and (<= (+ v_main_~b~0.base_BEFORE_CALL_6 1) |#StackHeapBarrier|) (<= 1 (+ v_main_~i~0_BEFORE_CALL_9 |#StackHeapBarrier|)) (<= 1 (+ v_main_~i~0_BEFORE_CALL_9 ~N~0)) (<= 0 v_main_~i~0_BEFORE_CALL_9) (< v_main_~i~0_BEFORE_CALL_9 ~N~0) (not (= (select (select |#memory_int| v_main_~b~0.base_BEFORE_CALL_6) (* v_main_~i~0_BEFORE_CALL_9 8)) (+ (* v_main_~i~0_BEFORE_CALL_9 4) (* (* v_main_~i~0_BEFORE_CALL_9 v_main_~i~0_BEFORE_CALL_9) 4) 1))) (<= ~N~0 (+ 2147483647 v_main_~i~0_BEFORE_CALL_9)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 15:27:58,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:27:58,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 15:27:58,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-04-02 15:27:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201226999] [2023-04-02 15:27:58,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 15:27:58,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 15:27:58,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:27:58,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 15:27:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2023-04-02 15:27:58,512 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 15:27:58,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:27:58,622 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2023-04-02 15:27:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 15:27:58,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2023-04-02 15:27:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:27:58,623 INFO L225 Difference]: With dead ends: 61 [2023-04-02 15:27:58,624 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 15:27:58,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2023-04-02 15:27:58,625 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:27:58,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 44 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:27:58,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 15:27:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-04-02 15:27:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 15:27:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-04-02 15:27:58,632 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 26 [2023-04-02 15:27:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:27:58,632 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-04-02 15:27:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 15:27:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-04-02 15:27:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-02 15:27:58,633 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:27:58,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:27:58,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 15:27:58,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:27:58,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:27:58,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:27:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash 137138764, now seen corresponding path program 2 times [2023-04-02 15:27:58,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:27:58,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504313682] [2023-04-02 15:27:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:27:58,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:27:58,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:27:58,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792839622] [2023-04-02 15:27:58,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 15:27:58,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:27:58,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:27:58,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 15:27:58,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 15:27:58,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-02 15:27:58,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-04-02 15:27:58,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 15:27:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 15:27:59,010 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 15:27:59,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 15:27:59,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 15:27:59,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 15:27:59,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:27:59,217 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-04-02 15:27:59,220 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 15:27:59,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 03:27:59 BoogieIcfgContainer [2023-04-02 15:27:59,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 15:27:59,243 INFO L158 Benchmark]: Toolchain (without parser) took 5677.85ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 194.8MB in the beginning and 212.8MB in the end (delta: -18.0MB). Peak memory consumption was 31.3MB. Max. memory is 8.0GB. [2023-04-02 15:27:59,243 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 131.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 15:27:59,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.44ms. Allocated memory is still 241.2MB. Free memory was 194.3MB in the beginning and 183.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 15:27:59,244 INFO L158 Benchmark]: Boogie Preprocessor took 29.43ms. Allocated memory is still 241.2MB. Free memory was 183.7MB in the beginning and 182.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 15:27:59,244 INFO L158 Benchmark]: RCFGBuilder took 352.69ms. Allocated memory is still 241.2MB. Free memory was 182.2MB in the beginning and 166.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-04-02 15:27:59,245 INFO L158 Benchmark]: TraceAbstraction took 5102.10ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 166.0MB in the beginning and 212.8MB in the end (delta: -46.8MB). Peak memory consumption was 2.0MB. Max. memory is 8.0GB. [2023-04-02 15:27:59,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 131.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.44ms. Allocated memory is still 241.2MB. Free memory was 194.3MB in the beginning and 183.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.43ms. Allocated memory is still 241.2MB. Free memory was 183.7MB in the beginning and 182.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 352.69ms. Allocated memory is still 241.2MB. Free memory was 182.2MB in the beginning and 166.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5102.10ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 166.0MB in the beginning and 212.8MB in the end (delta: -46.8MB). Peak memory consumption was 2.0MB. 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [N=2, \old(N)=0] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=2, \old(N)=0, \old(cond)=1] [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=2, \old(N)=0] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [N=2, \old(N)=0, a={-2:0}, b={-1:0}, i=0] [L31] COND TRUE i