/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/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:06:55,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:06:55,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:06:55,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:06:55,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:06:55,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:06:55,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:06:55,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:06:55,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:06:55,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:06:55,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:06:55,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:06:55,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:06:55,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:06:55,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:06:55,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:06:55,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:06:55,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:06:55,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:06:55,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:06:55,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:06:55,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:06:55,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:06:55,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:06:55,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:06:55,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:06:55,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:06:55,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:06:55,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:06:55,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:06:55,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:06:55,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:06:55,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:06:55,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:06:55,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:06:55,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:06:55,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:06:55,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:06:55,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:06:55,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:06:55,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:06:55,888 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 [2023-04-01 05:06:55,921 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:06:55,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:06:55,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:06:55,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:06:55,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:06:55,923 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:06:55,923 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:06:55,923 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:06:55,924 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:06:55,924 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:06:55,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:06:55,924 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:06:55,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:06:55,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:06:55,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:06:55,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:06:55,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:06:55,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:06:55,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:06:55,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:06:55,926 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:06:55,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:06:55,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:06:55,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:06:55,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:06:56,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:06:56,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:06:56,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:06:56,164 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:06:56,165 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:06:56,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/nested5-1.c [2023-04-01 05:06:57,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:06:57,426 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:06:57,427 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested5-1.c [2023-04-01 05:06:57,431 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44fde1761/7fdfae85b9ab40edafa50f4eaadae110/FLAGda2c25c08 [2023-04-01 05:06:57,443 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44fde1761/7fdfae85b9ab40edafa50f4eaadae110 [2023-04-01 05:06:57,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:06:57,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:06:57,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:06:57,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:06:57,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:06:57,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552c4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57, skipping insertion in model container [2023-04-01 05:06:57,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:06:57,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:06:57,580 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/loops-crafted-1/nested5-1.c[321,334] [2023-04-01 05:06:57,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:06:57,599 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:06:57,606 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/loops-crafted-1/nested5-1.c[321,334] [2023-04-01 05:06:57,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:06:57,624 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:06:57,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57 WrapperNode [2023-04-01 05:06:57,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:06:57,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:06:57,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:06:57,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:06:57,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,654 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:06:57,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:06:57,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:06:57,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:06:57,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (1/1) ... [2023-04-01 05:06:57,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:06:57,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:06:57,681 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) [2023-04-01 05:06:57,691 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 [2023-04-01 05:06:57,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:06:57,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:06:57,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:06:57,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:06:57,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:06:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:06:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:06:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:06:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:06:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:06:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:06:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:06:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:06:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:06:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:06:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:06:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:06:57,752 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:06:57,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:06:57,860 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:06:57,882 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:06:57,882 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 05:06:57,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:06:57 BoogieIcfgContainer [2023-04-01 05:06:57,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:06:57,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:06:57,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:06:57,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:06:57,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:06:57" (1/3) ... [2023-04-01 05:06:57,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0d9a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:06:57, skipping insertion in model container [2023-04-01 05:06:57,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:06:57" (2/3) ... [2023-04-01 05:06:57,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0d9a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:06:57, skipping insertion in model container [2023-04-01 05:06:57,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:06:57" (3/3) ... [2023-04-01 05:06:57,889 INFO L112 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2023-04-01 05:06:57,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:06:57,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:06:57,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:06:57,935 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;@17be3284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:06:57,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:06:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 05:06:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-01 05:06:57,943 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:06:57,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:06:57,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:06:57,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:06:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash 308477259, now seen corresponding path program 1 times [2023-04-01 05:06:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:06:57,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437068994] [2023-04-01 05:06:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:06:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:06:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:06:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:06:58,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:06:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437068994] [2023-04-01 05:06:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437068994] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:06:58,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:06:58,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 05:06:58,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121812564] [2023-04-01 05:06:58,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:06:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 05:06:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:06:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 05:06:58,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:06:58,210 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 05:06:58,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:06:58,244 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2023-04-01 05:06:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 05:06:58,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-04-01 05:06:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:06:58,250 INFO L225 Difference]: With dead ends: 43 [2023-04-01 05:06:58,250 INFO L226 Difference]: Without dead ends: 23 [2023-04-01 05:06:58,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:06:58,254 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:06:58,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 33 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:06:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-01 05:06:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-04-01 05:06:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 05:06:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-04-01 05:06:58,279 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2023-04-01 05:06:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:06:58,280 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-04-01 05:06:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 05:06:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-04-01 05:06:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-01 05:06:58,280 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:06:58,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:06:58,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:06:58,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:06:58,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:06:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash 726724328, now seen corresponding path program 1 times [2023-04-01 05:06:58,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:06:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031167061] [2023-04-01 05:06:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:06:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:06:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:06:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:06:58,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:06:58,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031167061] [2023-04-01 05:06:58,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031167061] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:06:58,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870296300] [2023-04-01 05:06:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:06:58,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:06:58,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:06:58,463 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) [2023-04-01 05:06:58,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:06:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:06:58,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 05:06:58,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:06:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:06:58,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:06:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:06:58,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870296300] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:06:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [136283944] [2023-04-01 05:06:58,615 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-04-01 05:06:58,615 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:06:58,618 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:06:58,621 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:06:58,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:06:58,678 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:06:58,790 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2023-04-01 05:06:58,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:06:58,820 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:06:59,111 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '218#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 05:06:59,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:06:59,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 05:06:59,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-04-01 05:06:59,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059095627] [2023-04-01 05:06:59,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 05:06:59,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:06:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:06:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:06:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-04-01 05:06:59,114 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 05:06:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:06:59,165 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2023-04-01 05:06:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:06:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-04-01 05:06:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:06:59,167 INFO L225 Difference]: With dead ends: 40 [2023-04-01 05:06:59,168 INFO L226 Difference]: Without dead ends: 26 [2023-04-01 05:06:59,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-01 05:06:59,171 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:06:59,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:06:59,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-01 05:06:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2023-04-01 05:06:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 05:06:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-04-01 05:06:59,178 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2023-04-01 05:06:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:06:59,178 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-04-01 05:06:59,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 05:06:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-04-01 05:06:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 05:06:59,179 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:06:59,179 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:06:59,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 05:06:59,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:06:59,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:06:59,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:06:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash -685704053, now seen corresponding path program 2 times [2023-04-01 05:06:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:06:59,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121751553] [2023-04-01 05:06:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:06:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:06:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:06:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:06:59,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:06:59,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121751553] [2023-04-01 05:06:59,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121751553] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:06:59,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139733207] [2023-04-01 05:06:59,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 05:06:59,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:06:59,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:06:59,536 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) [2023-04-01 05:06:59,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:06:59,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 05:06:59,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 05:06:59,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 05:06:59,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:06:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 05:06:59,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:06:59,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139733207] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:06:59,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:06:59,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-04-01 05:06:59,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966101057] [2023-04-01 05:06:59,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:06:59,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:06:59,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:06:59,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:06:59,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-01 05:06:59,721 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 05:06:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:06:59,821 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2023-04-01 05:06:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:06:59,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-01 05:06:59,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:06:59,823 INFO L225 Difference]: With dead ends: 26 [2023-04-01 05:06:59,823 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 05:06:59,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-04-01 05:06:59,824 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:06:59,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:06:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 05:06:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 05:06:59,825 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) [2023-04-01 05:06:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 05:06:59,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2023-04-01 05:06:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:06:59,826 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 05:06:59,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 05:06:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 05:06:59,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 05:06:59,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:06:59,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 05:07:00,034 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,SelfDestructingSolverStorable2 [2023-04-01 05:07:00,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 05:07:00,063 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-01 05:07:00,063 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-01 05:07:00,065 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:07:00,065 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:07:00,065 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:07:00,068 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 05:07:00,068 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 05:07:00,068 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:07:00,069 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2023-04-01 05:07:00,069 INFO L895 garLoopResultBuilder]: At program point L23-3(line 23) the Hoare annotation is: (or (= main_~v~0 0) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2023-04-01 05:07:00,069 INFO L895 garLoopResultBuilder]: At program point L23-4(line 23) the Hoare annotation is: (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2023-04-01 05:07:00,069 INFO L902 garLoopResultBuilder]: At program point L19-3(lines 19 25) the Hoare annotation is: true [2023-04-01 05:07:00,069 INFO L899 garLoopResultBuilder]: For program point L24(lines 22 25) no Hoare annotation was computed. [2023-04-01 05:07:00,069 INFO L902 garLoopResultBuilder]: At program point L20-3(lines 20 25) the Hoare annotation is: true [2023-04-01 05:07:00,069 INFO L902 garLoopResultBuilder]: At program point L21-3(lines 21 25) the Hoare annotation is: true [2023-04-01 05:07:00,070 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 27) the Hoare annotation is: true [2023-04-01 05:07:00,070 INFO L902 garLoopResultBuilder]: At program point L22-2(lines 22 25) the Hoare annotation is: true [2023-04-01 05:07:00,070 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2023-04-01 05:07:00,070 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 5 10) the Hoare annotation is: true [2023-04-01 05:07:00,070 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-04-01 05:07:00,070 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-04-01 05:07:00,070 INFO L899 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2023-04-01 05:07:00,070 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-04-01 05:07:00,073 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-04-01 05:07:00,075 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:07:00,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:07:00 BoogieIcfgContainer [2023-04-01 05:07:00,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:07:00,088 INFO L158 Benchmark]: Toolchain (without parser) took 2642.63ms. Allocated memory was 335.5MB in the beginning and 417.3MB in the end (delta: 81.8MB). Free memory was 297.1MB in the beginning and 264.8MB in the end (delta: 32.3MB). Peak memory consumption was 114.0MB. Max. memory is 8.0GB. [2023-04-01 05:07:00,088 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory is still 298.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:07:00,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.93ms. Allocated memory is still 335.5MB. Free memory was 296.9MB in the beginning and 286.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 05:07:00,089 INFO L158 Benchmark]: Boogie Preprocessor took 31.47ms. Allocated memory is still 335.5MB. Free memory was 286.7MB in the beginning and 285.4MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 05:07:00,089 INFO L158 Benchmark]: RCFGBuilder took 226.45ms. Allocated memory is still 335.5MB. Free memory was 285.0MB in the beginning and 272.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-01 05:07:00,089 INFO L158 Benchmark]: TraceAbstraction took 2202.03ms. Allocated memory was 335.5MB in the beginning and 417.3MB in the end (delta: 81.8MB). Free memory was 271.4MB in the beginning and 264.8MB in the end (delta: 6.6MB). Peak memory consumption was 87.7MB. Max. memory is 8.0GB. [2023-04-01 05:07:00,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory is still 298.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.93ms. Allocated memory is still 335.5MB. Free memory was 296.9MB in the beginning and 286.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.47ms. Allocated memory is still 335.5MB. Free memory was 286.7MB in the beginning and 285.4MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 226.45ms. Allocated memory is still 335.5MB. Free memory was 285.0MB in the beginning and 272.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2202.03ms. Allocated memory was 335.5MB in the beginning and 417.3MB in the end (delta: 81.8MB). Free memory was 271.4MB in the beginning and 264.8MB in the end (delta: 6.6MB). Peak memory consumption was 87.7MB. 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: 7]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 49 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 13 PreInvPairs, 27 NumberOfFragments, 33 HoareAnnotationTreeSize, 13 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 80 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 2 QuantifiedInterpolants, 229 SizeOfPredicates, 2 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 10/23 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: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: v == 0 || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-04-01 05:07:00,110 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...