/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/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:20:22,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:20:22,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:20:22,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:20:22,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:20:22,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:20:22,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:20:22,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:20:22,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:20:22,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:20:22,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:20:22,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:20:22,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:20:22,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:20:22,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:20:22,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:20:22,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:20:22,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:20:22,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:20:22,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:20:22,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:20:22,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:20:22,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:20:22,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:20:22,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:20:22,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:20:22,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:20:22,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:20:22,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:20:22,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:20:22,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:20:22,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:20:22,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:20:22,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:20:22,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:20:22,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:20:22,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:20:22,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:20:22,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:20:22,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:20:22,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:20:22,164 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 [2023-04-03 01:20:22,194 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:20:22,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:20:22,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:20:22,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:20:22,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:20:22,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:20:22,195 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:20:22,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:20:22,195 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:20:22,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:20:22,195 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:20:22,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:20:22,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:20:22,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:20:22,196 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:20:22,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:20:22,196 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:20:22,196 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:20:22,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:20:22,197 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:20:22,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:20:22,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:20:22,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:20:22,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:20:22,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:20:22,198 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:20:22,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:20:22,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:20:22,198 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:20:22,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:20:22,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:20:22,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:20:22,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:20:22,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:20:22,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:20:22,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:20:22,425 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:20:22,426 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:20:22,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2023-04-03 01:20:23,459 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:20:23,585 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:20:23,586 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec.c [2023-04-03 01:20:23,589 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1bf76c5/a5ea5ebcf12448ee99506e7634ad7578/FLAGc423e46a3 [2023-04-03 01:20:23,598 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1bf76c5/a5ea5ebcf12448ee99506e7634ad7578 [2023-04-03 01:20:23,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:20:23,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:20:23,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:20:23,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:20:23,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:20:23,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a585e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23, skipping insertion in model container [2023-04-03 01:20:23,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:20:23,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:20:23,701 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2023-04-03 01:20:23,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:20:23,717 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:20:23,724 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/verifythis/elimination_max_rec.c[493,506] [2023-04-03 01:20:23,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:20:23,738 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:20:23,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23 WrapperNode [2023-04-03 01:20:23,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:20:23,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:20:23,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:20:23,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:20:23,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:20:23,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:20:23,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:20:23,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:20:23,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (1/1) ... [2023-04-03 01:20:23,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:20:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:20:23,790 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) [2023-04-03 01:20:23,795 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 [2023-04-03 01:20:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:20:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:20:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:20:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:20:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-03 01:20:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:20:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:20:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-03 01:20:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-03 01:20:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 01:20:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:20:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:20:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:20:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:20:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:20:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-03 01:20:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:20:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:20:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:20:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:20:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 01:20:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-03 01:20:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:20:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:20:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:20:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:20:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:20:23,910 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:20:23,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:20:24,105 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:20:24,146 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:20:24,146 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 01:20:24,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:20:24 BoogieIcfgContainer [2023-04-03 01:20:24,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:20:24,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:20:24,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:20:24,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:20:24,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:20:23" (1/3) ... [2023-04-03 01:20:24,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e75bd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:20:24, skipping insertion in model container [2023-04-03 01:20:24,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:20:23" (2/3) ... [2023-04-03 01:20:24,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e75bd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:20:24, skipping insertion in model container [2023-04-03 01:20:24,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:20:24" (3/3) ... [2023-04-03 01:20:24,156 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2023-04-03 01:20:24,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:20:24,168 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:20:24,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:20:24,202 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;@7a69175a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:20:24,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:20:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-03 01:20:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-03 01:20:24,209 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:20:24,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:20:24,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:20:24,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:20:24,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1382867483, now seen corresponding path program 1 times [2023-04-03 01:20:24,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:20:24,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954099769] [2023-04-03 01:20:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:20:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:20:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:20:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:20:24,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:20:24,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954099769] [2023-04-03 01:20:24,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954099769] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:20:24,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:20:24,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:20:24,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420897274] [2023-04-03 01:20:24,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:20:24,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:20:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:20:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:20:24,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:20:24,668 INFO L87 Difference]: Start difference. First operand has 36 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-03 01:20:24,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:20:24,814 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2023-04-03 01:20:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:20:24,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-04-03 01:20:24,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:20:24,823 INFO L225 Difference]: With dead ends: 78 [2023-04-03 01:20:24,823 INFO L226 Difference]: Without dead ends: 45 [2023-04-03 01:20:24,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-03 01:20:24,830 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:20:24,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 129 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:20:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-03 01:20:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-04-03 01:20:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-03 01:20:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-04-03 01:20:24,867 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 20 [2023-04-03 01:20:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:20:24,868 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-04-03 01:20:24,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-03 01:20:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-04-03 01:20:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-03 01:20:24,869 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:20:24,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:20:24,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:20:24,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:20:24,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:20:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1161205955, now seen corresponding path program 1 times [2023-04-03 01:20:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:20:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10790163] [2023-04-03 01:20:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:20:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:20:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:20:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:20:25,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:20:25,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10790163] [2023-04-03 01:20:25,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10790163] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:20:25,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301429038] [2023-04-03 01:20:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:20:25,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:20:25,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:20:25,322 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) [2023-04-03 01:20:25,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:20:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:20:25,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 34 conjunts are in the unsatisfiable core [2023-04-03 01:20:25,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:20:25,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-04-03 01:20:25,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 60 [2023-04-03 01:20:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:20:25,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:20:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:20:30,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301429038] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:20:30,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1195301054] [2023-04-03 01:20:30,183 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-03 01:20:30,183 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:20:30,186 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-04-03 01:20:30,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:20:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 8] total 22 [2023-04-03 01:20:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74917205] [2023-04-03 01:20:30,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-03 01:20:30,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-03 01:20:30,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:20:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-03 01:20:30,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-04-03 01:20:30,190 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 22 states, 20 states have (on average 1.75) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-03 01:20:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:20:30,541 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2023-04-03 01:20:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:20:30,541 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.75) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 29 [2023-04-03 01:20:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:20:30,542 INFO L225 Difference]: With dead ends: 53 [2023-04-03 01:20:30,542 INFO L226 Difference]: Without dead ends: 51 [2023-04-03 01:20:30,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2023-04-03 01:20:30,543 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:20:30,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 200 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:20:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-04-03 01:20:30,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-04-03 01:20:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 13 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-03 01:20:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2023-04-03 01:20:30,583 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 29 [2023-04-03 01:20:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:20:30,583 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2023-04-03 01:20:30,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.75) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-03 01:20:30,583 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2023-04-03 01:20:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-04-03 01:20:30,584 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:20:30,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:20:30,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 01:20:30,789 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 [2023-04-03 01:20:30,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:20:30,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:20:30,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1775823049, now seen corresponding path program 1 times [2023-04-03 01:20:30,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:20:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427579166] [2023-04-03 01:20:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:20:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:20:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:20:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:20:30,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:20:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427579166] [2023-04-03 01:20:30,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427579166] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:20:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893078544] [2023-04-03 01:20:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:20:30,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:20:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:20:30,958 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) [2023-04-03 01:20:30,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 01:20:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:20:31,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2023-04-03 01:20:31,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:20:31,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-04-03 01:20:31,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-04-03 01:20:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:20:31,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:20:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893078544] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:20:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1221038883] [2023-04-03 01:20:33,308 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-04-03 01:20:33,308 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:20:33,308 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-04-03 01:20:33,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-03 01:20:33,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 19 [2023-04-03 01:20:33,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653768128] [2023-04-03 01:20:33,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-03 01:20:33,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-03 01:20:33,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:20:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-03 01:20:33,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-04-03 01:20:33,311 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 19 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:20:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:20:33,511 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2023-04-03 01:20:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 01:20:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36 [2023-04-03 01:20:33,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:20:33,512 INFO L225 Difference]: With dead ends: 53 [2023-04-03 01:20:33,512 INFO L226 Difference]: Without dead ends: 0 [2023-04-03 01:20:33,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-04-03 01:20:33,513 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:20:33,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 151 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:20:33,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-03 01:20:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-03 01:20:33,514 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) [2023-04-03 01:20:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-03 01:20:33,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2023-04-03 01:20:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:20:33,514 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-03 01:20:33,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:20:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-03 01:20:33,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-03 01:20:33,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 01:20:33,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-03 01:20:33,722 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 [2023-04-03 01:20:33,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-03 01:20:33,952 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2023-04-03 01:20:33,952 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 5) no Hoare annotation was computed. [2023-04-03 01:20:33,952 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-04-03 01:20:33,952 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-04-03 01:20:33,952 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |main_#t~malloc14.base|)) (= (select |#memory_int| main_~a~0.base) .cse0))) [2023-04-03 01:20:33,952 INFO L902 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: true [2023-04-03 01:20:33,952 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2023-04-03 01:20:33,953 INFO L902 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: true [2023-04-03 01:20:33,953 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2023-04-03 01:20:33,953 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-04-03 01:20:33,953 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 41 50) the Hoare annotation is: true [2023-04-03 01:20:33,953 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 41 50) no Hoare annotation was computed. [2023-04-03 01:20:33,953 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (= .cse3 (select |#memory_int| |check_#in~a.base|)))) (.cse1 (and (<= (+ check_~y 1) check_~n) (= .cse3 (select |#memory_int| check_~a.base)) (<= 1 check_~x))) (.cse2 (< |check_#in~n| (+ |check_#in~y| 1)))) (and (or .cse0 .cse1 (not (= |check_#in~x| 0)) .cse2) (or (< |check_#in~x| 1) .cse0 .cse1 .cse2)))) [2023-04-03 01:20:33,953 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2023-04-03 01:20:33,953 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-04-03 01:20:33,953 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 26) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (= .cse3 (select |#memory_int| |check_#in~a.base|)))) (.cse1 (and (<= (+ check_~y 1) check_~n) (= .cse3 (select |#memory_int| check_~a.base)) (<= 1 check_~x))) (.cse2 (< |check_#in~n| (+ |check_#in~y| 1)))) (and (or .cse0 .cse1 (not (= |check_#in~x| 0)) .cse2) (or (< |check_#in~x| 1) .cse0 .cse1 .cse2)))) [2023-04-03 01:20:33,953 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (= .cse4 (select |#memory_int| |check_#in~a.base|)))) (.cse1 (<= (+ check_~y 1) check_~n)) (.cse2 (= .cse4 (select |#memory_int| check_~a.base))) (.cse3 (< |check_#in~n| (+ |check_#in~y| 1)))) (and (or .cse0 (not (= |check_#in~x| 0)) (and (= check_~x 0) .cse1 .cse2) .cse3) (or (< |check_#in~x| 1) .cse0 (and .cse1 .cse2 (<= 1 check_~x)) .cse3)))) [2023-04-03 01:20:33,953 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-04-03 01:20:33,953 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 16 39) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 39) the Hoare annotation is: true [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 16 39) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (= .cse3 (select |#memory_int| |check_#in~a.base|)))) (.cse1 (and (= check_~ai~0 0) (<= (+ check_~y 1) check_~n) (= .cse3 (select |#memory_int| check_~a.base)) (<= 1 check_~x) (= check_~ax~0 0))) (.cse2 (< |check_#in~n| (+ |check_#in~y| 1)))) (and (or (< |check_#in~x| 1) .cse0 .cse1 .cse2) (or .cse0 (not (= |check_#in~x| 0)) .cse1 .cse2)))) [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2023-04-03 01:20:33,954 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2023-04-03 01:20:33,955 INFO L899 garLoopResultBuilder]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2023-04-03 01:20:33,955 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2023-04-03 01:20:33,955 INFO L899 garLoopResultBuilder]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2023-04-03 01:20:33,955 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-03 01:20:33,957 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-04-03 01:20:33,958 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 01:20:33,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 01:20:33 BoogieIcfgContainer [2023-04-03 01:20:33,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 01:20:33,960 INFO L158 Benchmark]: Toolchain (without parser) took 10359.93ms. Allocated memory was 200.3MB in the beginning and 270.5MB in the end (delta: 70.3MB). Free memory was 159.9MB in the beginning and 115.4MB in the end (delta: 44.6MB). Peak memory consumption was 116.6MB. Max. memory is 8.0GB. [2023-04-03 01:20:33,961 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 156.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 01:20:33,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 137.86ms. Allocated memory is still 200.3MB. Free memory was 159.9MB in the beginning and 149.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-03 01:20:33,961 INFO L158 Benchmark]: Boogie Preprocessor took 29.43ms. Allocated memory is still 200.3MB. Free memory was 149.4MB in the beginning and 147.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-03 01:20:33,961 INFO L158 Benchmark]: RCFGBuilder took 378.83ms. Allocated memory is still 200.3MB. Free memory was 147.7MB in the beginning and 133.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-04-03 01:20:33,961 INFO L158 Benchmark]: TraceAbstraction took 9810.57ms. Allocated memory was 200.3MB in the beginning and 270.5MB in the end (delta: 70.3MB). Free memory was 132.4MB in the beginning and 115.4MB in the end (delta: 17.0MB). Peak memory consumption was 89.3MB. Max. memory is 8.0GB. [2023-04-03 01:20:33,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 156.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 137.86ms. Allocated memory is still 200.3MB. Free memory was 159.9MB in the beginning and 149.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.43ms. Allocated memory is still 200.3MB. Free memory was 149.4MB in the beginning and 147.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 378.83ms. Allocated memory is still 200.3MB. Free memory was 147.7MB in the beginning and 133.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 9810.57ms. Allocated memory was 200.3MB in the beginning and 270.5MB in the end (delta: 70.3MB). Free memory was 132.4MB in the beginning and 115.4MB in the end (delta: 17.0MB). Peak memory consumption was 89.3MB. 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: 11]: 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 8 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 480 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 412 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 668 IncrementalHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 68 mSDtfsCounter, 668 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=2, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 38 PreInvPairs, 47 NumberOfFragments, 291 HoareAnnotationTreeSize, 38 FomulaSimplifications, 85 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 317 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 173 ConstructedInterpolants, 16 QuantifiedInterpolants, 880 SizeOfPredicates, 33 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 12/27 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 RESULT: Ultimate proved your program to be correct! [2023-04-03 01:20:33,979 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...