/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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:13:41,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:13:41,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:13:42,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:13:42,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:13:42,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:13:42,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:13:42,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:13:42,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:13:42,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:13:42,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:13:42,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:13:42,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:13:42,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:13:42,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:13:42,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:13:42,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:13:42,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:13:42,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:13:42,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:13:42,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:13:42,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:13:42,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:13:42,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:13:42,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:13:42,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:13:42,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:13:42,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:13:42,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:13:42,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:13:42,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:13:42,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:13:42,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:13:42,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:13:42,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:13:42,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:13:42,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:13:42,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:13:42,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:13:42,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:13:42,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:13:42,080 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 22:13:42,103 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:13:42,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:13:42,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:13:42,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:13:42,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:13:42,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:13:42,104 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:13:42,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:13:42,104 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:13:42,105 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:13:42,105 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:13:42,105 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:13:42,106 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:13:42,106 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:13:42,106 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:13:42,106 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:13:42,106 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:13:42,106 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:13:42,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:13:42,107 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:13:42,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:13:42,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:13:42,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:13:42,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:13:42,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:13:42,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:13:42,108 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:13:42,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:13:42,108 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:13:42,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:13:42,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:13:42,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:13:42,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:13:42,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:13:42,109 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:13:42,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:13:42,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:13:42,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:13:42,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:13:42,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:13:42,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:13:42,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:13:42,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:13:42,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:13:42,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:13:42,345 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:13:42,345 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:13:42,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2023-04-02 22:13:43,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:13:43,714 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:13:43,714 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2023-04-02 22:13:43,728 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4424e823a/4677974c49cf44a0944eba86735e242a/FLAGe7da2b964 [2023-04-02 22:13:43,740 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4424e823a/4677974c49cf44a0944eba86735e242a [2023-04-02 22:13:43,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:13:43,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:13:43,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:13:43,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:13:43,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:13:43,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:13:43" (1/1) ... [2023-04-02 22:13:43,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ae8fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:43, skipping insertion in model container [2023-04-02 22:13:43,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:13:43" (1/1) ... [2023-04-02 22:13:43,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:13:43,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:13:43,983 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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2023-04-02 22:13:43,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:13:43,997 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:13:44,048 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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2023-04-02 22:13:44,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:13:44,057 WARN L667 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-04-02 22:13:44,063 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:13:44,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44 WrapperNode [2023-04-02 22:13:44,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:13:44,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:13:44,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:13:44,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:13:44,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:13:44,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:13:44,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:13:44,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:13:44,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (1/1) ... [2023-04-02 22:13:44,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:13:44,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:13:44,194 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 22:13:44,197 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 22:13:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:13:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:13:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:13:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:13:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:13:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:13:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:13:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:13:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2023-04-02 22:13:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-04-02 22:13:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:13:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 22:13:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:13:44,352 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:13:44,354 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:13:44,951 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:13:44,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:13:44,960 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 22:13:44,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:13:44 BoogieIcfgContainer [2023-04-02 22:13:44,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:13:44,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:13:44,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:13:44,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:13:44,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:13:43" (1/3) ... [2023-04-02 22:13:44,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270a4c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:13:44, skipping insertion in model container [2023-04-02 22:13:44,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:44" (2/3) ... [2023-04-02 22:13:44,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270a4c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:13:44, skipping insertion in model container [2023-04-02 22:13:44,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:13:44" (3/3) ... [2023-04-02 22:13:44,969 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2023-04-02 22:13:44,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:13:44,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:13:45,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:13:45,037 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;@14ce2724, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:13:45,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:13:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:13:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-02 22:13:45,046 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:13:45,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:13:45,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:13:45,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:13:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1880473099, now seen corresponding path program 1 times [2023-04-02 22:13:45,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:13:45,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77298591] [2023-04-02 22:13:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:13:45,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:13:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:13:45,532 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 22:13:45,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:13:45,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77298591] [2023-04-02 22:13:45,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77298591] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:13:45,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:13:45,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 22:13:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157492715] [2023-04-02 22:13:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:13:45,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 22:13:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:13:45,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 22:13:45,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 22:13:45,575 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:13:45,621 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-04-02 22:13:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 22:13:45,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-02 22:13:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:13:45,630 INFO L225 Difference]: With dead ends: 37 [2023-04-02 22:13:45,630 INFO L226 Difference]: Without dead ends: 20 [2023-04-02 22:13:45,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:13:45,641 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:13:45,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 47 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:13:45,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-04-02 22:13:45,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2023-04-02 22:13:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-04-02 22:13:45,669 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2023-04-02 22:13:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:13:45,670 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-04-02 22:13:45,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-04-02 22:13:45,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-02 22:13:45,671 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:13:45,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:13:45,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:13:45,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:13:45,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:13:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1439258605, now seen corresponding path program 1 times [2023-04-02 22:13:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:13:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625182873] [2023-04-02 22:13:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:13:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:13:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:13:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:13:45,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:13:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625182873] [2023-04-02 22:13:45,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625182873] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:13:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654457987] [2023-04-02 22:13:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:13:45,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:13:45,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:13:45,925 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 22:13:45,926 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 22:13:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:13:46,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 22:13:46,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:13:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:13:46,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:13:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:13:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654457987] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:13:46,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2033565472] [2023-04-02 22:13:46,258 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-04-02 22:13:46,258 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:13:46,274 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:13:46,278 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:13:46,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:13:46,442 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2023-04-02 22:13:50,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:13:50,062 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:13:51,122 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '196#(and (<= 1 |#StackHeapBarrier|) (= main_~__tmp_1~0.base main_~Id_MCDC_89__Id_MCDC_88~0.base) (= |main_~#main__Id_MCDC_119~0.base| main_~__tmp_1~0.base) (= main_~Id_MCDC_89__Id_MCDC_88~0.offset 0) (= main_~__VERIFIER_assert__Id_MCDC_92~1 0) (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0) (= main_~__tmp_3~0 0) (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 0) (= main_~main__Id_MCDC_115~0 0) (<= (+ |#StackHeapBarrier| 1) |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (<= (+ |#StackHeapBarrier| 1) main_~Id_MCDC_89__Id_MCDC_88~0.base) (= |main_~#main__Id_MCDC_119~0.offset| 0) (= main_~main__Id_MCDC_116~0 0) (= |#NULL.offset| 0) (<= 0 main_~Id_MCDC_89__Id_MCDC_96~0) (= |old(~Id_MCDC_93~0)| 0) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0) (= ~__return_main~0 0) (= main_~__tmp_1~0.offset 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:13:51,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:13:51,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:13:51,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-04-02 22:13:51,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282573060] [2023-04-02 22:13:51,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:13:51,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 22:13:51,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:13:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 22:13:51,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-04-02 22:13:51,125 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:13:51,273 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2023-04-02 22:13:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 22:13:51,274 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-04-02 22:13:51,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:13:51,275 INFO L225 Difference]: With dead ends: 37 [2023-04-02 22:13:51,275 INFO L226 Difference]: Without dead ends: 34 [2023-04-02 22:13:51,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-04-02 22:13:51,276 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:13:51,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:13:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-04-02 22:13:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-04-02 22:13:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2023-04-02 22:13:51,281 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 16 [2023-04-02 22:13:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:13:51,281 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2023-04-02 22:13:51,281 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2023-04-02 22:13:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-02 22:13:51,282 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:13:51,282 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:13:51,288 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 22:13:51,482 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 [2023-04-02 22:13:51,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:13:51,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:13:51,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2019194869, now seen corresponding path program 2 times [2023-04-02 22:13:51,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:13:51,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851777142] [2023-04-02 22:13:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:13:51,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:13:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:13:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:13:51,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:13:51,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851777142] [2023-04-02 22:13:51,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851777142] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:13:51,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861914363] [2023-04-02 22:13:51,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:13:51,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:13:51,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:13:51,833 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 22:13:51,836 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 22:13:53,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:13:53,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:13:53,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 22:13:53,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:13:53,625 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 22:13:53,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 26 [2023-04-02 22:13:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 22:13:53,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:13:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 22:13:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861914363] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:13:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1673370662] [2023-04-02 22:13:54,392 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-04-02 22:13:54,392 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:13:54,392 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:13:54,393 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:13:54,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:13:54,463 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2023-04-02 22:13:56,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:13:56,890 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:13:57,966 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '510#(and (<= 1 |#StackHeapBarrier|) (= main_~__tmp_1~0.base main_~Id_MCDC_89__Id_MCDC_88~0.base) (= |main_~#main__Id_MCDC_119~0.base| main_~__tmp_1~0.base) (= main_~Id_MCDC_89__Id_MCDC_88~0.offset 0) (= main_~__VERIFIER_assert__Id_MCDC_92~1 0) (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0) (= main_~__tmp_3~0 0) (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 0) (= main_~main__Id_MCDC_115~0 0) (<= (+ |#StackHeapBarrier| 1) |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (<= (+ |#StackHeapBarrier| 1) main_~Id_MCDC_89__Id_MCDC_88~0.base) (= |main_~#main__Id_MCDC_119~0.offset| 0) (= main_~main__Id_MCDC_116~0 0) (= |#NULL.offset| 0) (<= 0 main_~Id_MCDC_89__Id_MCDC_96~0) (= |old(~Id_MCDC_93~0)| 0) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0) (= ~__return_main~0 0) (= main_~__tmp_1~0.offset 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:13:57,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:13:57,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:13:57,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 22 [2023-04-02 22:13:57,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510206803] [2023-04-02 22:13:57,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:13:57,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 22:13:57,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:13:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 22:13:57,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:13:57,969 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 22 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 22:13:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:13:58,809 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2023-04-02 22:13:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 22:13:58,809 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 22 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-04-02 22:13:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:13:58,809 INFO L225 Difference]: With dead ends: 43 [2023-04-02 22:13:58,810 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:13:58,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=398, Invalid=1858, Unknown=0, NotChecked=0, Total=2256 [2023-04-02 22:13:58,812 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 119 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:13:58,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 61 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:13:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:13:58,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:13:58,813 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) [2023-04-02 22:13:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:13:58,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2023-04-02 22:13:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:13:58,814 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:13:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 22 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 22:13:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:13:58,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:13:58,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:13:58,825 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 22:13:59,025 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 [2023-04-02 22:13:59,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:13:59,244 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 22:13:59,244 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 22:13:59,244 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 236) no Hoare annotation was computed. [2023-04-02 22:13:59,244 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 208) no Hoare annotation was computed. [2023-04-02 22:13:59,244 INFO L899 garLoopResultBuilder]: For program point L221(line 221) no Hoare annotation was computed. [2023-04-02 22:13:59,244 INFO L899 garLoopResultBuilder]: For program point L219(lines 219 227) no Hoare annotation was computed. [2023-04-02 22:13:59,244 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 133 237) no Hoare annotation was computed. [2023-04-02 22:13:59,244 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 229) no Hoare annotation was computed. [2023-04-02 22:13:59,245 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 234) no Hoare annotation was computed. [2023-04-02 22:13:59,245 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 133 237) no Hoare annotation was computed. [2023-04-02 22:13:59,245 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 133 237) the Hoare annotation is: (or (not (= |old(~Id_MCDC_93~0)| 0)) (not (= (select |old(#length)| 4) 7)) (not (= (select |old(#length)| 2) 24)) (not (= (select |old(#length)| 3) 12)) (and (= 7 (select |#length| 4)) (= (select |#length| 3) 12) (= (select |#length| 2) 24) (= ~Id_MCDC_93~0 0))) [2023-04-02 22:13:59,245 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 207) no Hoare annotation was computed. [2023-04-02 22:13:59,245 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 221) no Hoare annotation was computed. [2023-04-02 22:13:59,245 INFO L895 garLoopResultBuilder]: At program point L175(lines 167 235) the Hoare annotation is: (let ((.cse7 (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|))) (let ((.cse0 (= (select .cse7 492) 0)) (.cse1 (= 7 (select .cse7 272))) (.cse2 (= (select .cse7 128) 2)) (.cse3 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse4 (= (select .cse7 80) 4)) (.cse5 (= |main_~#main__Id_MCDC_119~0.offset| 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (not (= (select |old(#length)| 4) 7)) (not (= (select |old(#length)| 2) 24)) (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse0 .cse1 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) .cse2 .cse3 (<= ~Id_MCDC_93~0 1) .cse4 (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0)) (let ((.cse6 (mod (+ 4294967295 main_~Id_MCDC_89__Id_MCDC_96~0) 4294967296))) (and .cse0 .cse1 (< .cse6 42) .cse2 (not (= 41 .cse6)) .cse3 (< (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296) 42) (< (mod ~Id_MCDC_93~0 4294967296) 42) .cse4 .cse5)) (not (= (select |old(#length)| 3) 12))))) [2023-04-02 22:13:59,245 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:13:59,245 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:13:59,246 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:13:59,246 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (= 7 (select |#length| 4)) (= (select |#length| 3) 12) (= (select |#length| 2) 24) (= ~Id_MCDC_93~0 0)) [2023-04-02 22:13:59,246 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:13:59,246 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:13:59,249 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-04-02 22:13:59,250 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:13:59,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:13:59 BoogieIcfgContainer [2023-04-02 22:13:59,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:13:59,265 INFO L158 Benchmark]: Toolchain (without parser) took 15522.31ms. Allocated memory was 190.8MB in the beginning and 735.1MB in the end (delta: 544.2MB). Free memory was 125.4MB in the beginning and 464.2MB in the end (delta: -338.7MB). Peak memory consumption was 206.2MB. Max. memory is 8.0GB. [2023-04-02 22:13:59,265 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:13:59,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.45ms. Allocated memory is still 190.8MB. Free memory was 125.2MB in the beginning and 108.7MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-04-02 22:13:59,266 INFO L158 Benchmark]: Boogie Preprocessor took 89.10ms. Allocated memory was 190.8MB in the beginning and 237.0MB in the end (delta: 46.1MB). Free memory was 108.7MB in the beginning and 201.6MB in the end (delta: -92.9MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. [2023-04-02 22:13:59,266 INFO L158 Benchmark]: RCFGBuilder took 807.47ms. Allocated memory is still 237.0MB. Free memory was 201.5MB in the beginning and 190.3MB in the end (delta: 11.2MB). Peak memory consumption was 79.3MB. Max. memory is 8.0GB. [2023-04-02 22:13:59,266 INFO L158 Benchmark]: TraceAbstraction took 14301.31ms. Allocated memory was 237.0MB in the beginning and 735.1MB in the end (delta: 498.1MB). Free memory was 189.3MB in the beginning and 464.2MB in the end (delta: -274.9MB). Peak memory consumption was 223.2MB. Max. memory is 8.0GB. [2023-04-02 22:13:59,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 320.45ms. Allocated memory is still 190.8MB. Free memory was 125.2MB in the beginning and 108.7MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 89.10ms. Allocated memory was 190.8MB in the beginning and 237.0MB in the end (delta: 46.1MB). Free memory was 108.7MB in the beginning and 201.6MB in the end (delta: -92.9MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. * RCFGBuilder took 807.47ms. Allocated memory is still 237.0MB. Free memory was 201.5MB in the beginning and 190.3MB in the end (delta: 11.2MB). Peak memory consumption was 79.3MB. Max. memory is 8.0GB. * TraceAbstraction took 14301.31ms. Allocated memory was 237.0MB in the beginning and 735.1MB in the end (delta: 498.1MB). Free memory was 189.3MB in the beginning and 464.2MB in the end (delta: -274.9MB). Peak memory consumption was 223.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 221]: 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.2s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 145 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 109 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 228 IncrementalHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 36 mSDtfsCounter, 228 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 32, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 240 HoareAnnotationTreeSize, 5 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 338 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 105 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 145 ConstructedInterpolants, 16 QuantifiedInterpolants, 1736 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1178 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 45/135 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: 167]: Loop Invariant Derived loop invariant: (((((!(\old(Id_MCDC_93) == 0) || !(\old(unknown-#length-unknown)[4] == 7)) || !(\old(unknown-#length-unknown)[2] == 24)) || (((((((((Id_MCDC_89__Id_MCDC_96 <= 1 && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][492] == 0) && 7 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][272]) && 0 < Id_MCDC_93 / 4294967296 + 1) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][128] == 2) && Id_MCDC_89__Id_MCDC_95 == 0) && Id_MCDC_93 <= 1) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][80] == 4) && 1 <= Id_MCDC_89__Id_MCDC_96) && main__Id_MCDC_119 == 0)) || (((((((unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][492] == 0 && 7 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][272]) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][128] == 2) && Id_MCDC_89__Id_MCDC_95 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][80] == 4) && main__Id_MCDC_119 == 0) && Id_MCDC_93 == 0) && Id_MCDC_89__Id_MCDC_96 == 0)) || (((((((((unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][492] == 0 && 7 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][272]) && (4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][128] == 2) && !(41 == (4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296)) && Id_MCDC_89__Id_MCDC_95 == 0) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && Id_MCDC_93 % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][80] == 4) && main__Id_MCDC_119 == 0)) || !(\old(unknown-#length-unknown)[3] == 12) RESULT: Ultimate proved your program to be correct! [2023-04-02 22:13:59,290 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...