/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/recursive-simple/id_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:17:35,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:17:35,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:17:35,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:17:35,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:17:35,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:17:35,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:17:35,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:17:35,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:17:35,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:17:35,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:17:35,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:17:35,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:17:35,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:17:35,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:17:35,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:17:35,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:17:35,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:17:35,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:17:35,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:17:35,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:17:35,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:17:35,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:17:35,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:17:35,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:17:35,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:17:35,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:17:35,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:17:35,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:17:35,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:17:35,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:17:35,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:17:35,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:17:35,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:17:35,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:17:35,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:17:35,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:17:35,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:17:35,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:17:35,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:17:35,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:17:35,529 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 01:17:35,551 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:17:35,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:17:35,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:17:35,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:17:35,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:17:35,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:17:35,553 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:17:35,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:17:35,553 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:17:35,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:17:35,553 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:17:35,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:17:35,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:17:35,554 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:17:35,554 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:17:35,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:17:35,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:17:35,554 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:17:35,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:17:35,555 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:17:35,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:17:35,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:17:35,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:17:35,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:17:35,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:17:35,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:17:35,555 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:17:35,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:17:35,556 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:17:35,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:17:35,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:17:35,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:17:35,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:17:35,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:17:35,556 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:17:35,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:17:35,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:17:35,557 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:17:35,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:17:35,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:17:35,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:17:35,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:17:35,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:17:35,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:17:35,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:17:35,774 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:17:35,774 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:17:35,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b2_o3.c [2023-04-03 01:17:36,905 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:17:37,059 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:17:37,060 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b2_o3.c [2023-04-03 01:17:37,063 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a098bf344/b58a612357c64dac8e79dc1b540e8bb8/FLAGeaac984d6 [2023-04-03 01:17:37,072 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a098bf344/b58a612357c64dac8e79dc1b540e8bb8 [2023-04-03 01:17:37,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:17:37,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:17:37,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:17:37,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:17:37,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:17:37,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a1cca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37, skipping insertion in model container [2023-04-03 01:17:37,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:17:37,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:17:37,210 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/recursive-simple/id_b2_o3.c[568,581] [2023-04-03 01:17:37,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:17:37,220 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:17:37,231 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/recursive-simple/id_b2_o3.c[568,581] [2023-04-03 01:17:37,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:17:37,240 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:17:37,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37 WrapperNode [2023-04-03 01:17:37,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:17:37,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:17:37,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:17:37,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:17:37,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:17:37,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:17:37,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:17:37,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:17:37,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (1/1) ... [2023-04-03 01:17:37,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:17:37,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:17:37,284 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 01:17:37,298 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 01:17:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:17:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:17:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:17:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-04-03 01:17:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:17:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:17:37,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:17:37,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:17:37,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:17:37,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:17:37,373 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:17:37,374 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:17:37,451 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:17:37,468 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:17:37,468 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 01:17:37,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:17:37 BoogieIcfgContainer [2023-04-03 01:17:37,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:17:37,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:17:37,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:17:37,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:17:37,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:17:37" (1/3) ... [2023-04-03 01:17:37,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35556402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:17:37, skipping insertion in model container [2023-04-03 01:17:37,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:17:37" (2/3) ... [2023-04-03 01:17:37,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35556402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:17:37, skipping insertion in model container [2023-04-03 01:17:37,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:17:37" (3/3) ... [2023-04-03 01:17:37,479 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2023-04-03 01:17:37,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:17:37,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:17:37,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:17:37,547 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;@7cbf4bb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:17:37,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:17:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-03 01:17:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-03 01:17:37,556 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:17:37,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:17:37,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:17:37,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:17:37,562 INFO L85 PathProgramCache]: Analyzing trace with hash -268503622, now seen corresponding path program 1 times [2023-04-03 01:17:37,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:17:37,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222240202] [2023-04-03 01:17:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:17:37,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:17:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:17:37,749 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 01:17:37,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:17:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222240202] [2023-04-03 01:17:37,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222240202] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:17:37,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:17:37,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 01:17:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158613209] [2023-04-03 01:17:37,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:17:37,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 01:17:37,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:17:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 01:17:37,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 01:17:37,773 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-03 01:17:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:17:37,803 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-04-03 01:17:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 01:17:37,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-04-03 01:17:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:17:37,810 INFO L225 Difference]: With dead ends: 32 [2023-04-03 01:17:37,810 INFO L226 Difference]: Without dead ends: 18 [2023-04-03 01:17:37,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 01:17:37,813 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:17:37,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 64 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:17:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-04-03 01:17:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-04-03 01:17:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-03 01:17:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-04-03 01:17:37,836 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2023-04-03 01:17:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:17:37,837 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-04-03 01:17:37,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-03 01:17:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-04-03 01:17:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-03 01:17:37,838 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:17:37,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:17:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:17:37,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:17:37,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:17:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash 771865439, now seen corresponding path program 1 times [2023-04-03 01:17:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:17:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148377669] [2023-04-03 01:17:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:17:37,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:17:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:17:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:17:38,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:17:38,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148377669] [2023-04-03 01:17:38,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148377669] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:17:38,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384068608] [2023-04-03 01:17:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:17:38,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:17:38,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:17:38,096 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 01:17:38,097 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 01:17:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:17:38,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-03 01:17:38,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:17:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:17:38,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:17:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384068608] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:17:38,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:17:38,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-03 01:17:38,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467658371] [2023-04-03 01:17:38,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:17:38,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 01:17:38,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:17:38,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 01:17:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:17:38,281 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-03 01:17:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:17:38,299 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-04-03 01:17:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 01:17:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-04-03 01:17:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:17:38,300 INFO L225 Difference]: With dead ends: 18 [2023-04-03 01:17:38,300 INFO L226 Difference]: Without dead ends: 0 [2023-04-03 01:17:38,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:17:38,304 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 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 [2023-04-03 01:17:38,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:17:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-03 01:17:38,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-03 01:17:38,308 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 01:17:38,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-03 01:17:38,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2023-04-03 01:17:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:17:38,308 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-03 01:17:38,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-03 01:17:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-03 01:17:38,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-03 01:17:38,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 01:17:38,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-03 01:17:38,515 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 01:17:38,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-03 01:17:38,527 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-03 01:17:38,528 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-03 01:17:38,529 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-04-03 01:17:38,529 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 13 19) no Hoare annotation was computed. [2023-04-03 01:17:38,529 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-04-03 01:17:38,529 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2023-04-03 01:17:38,530 INFO L902 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2023-04-03 01:17:38,530 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2023-04-03 01:17:38,530 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 13 19) no Hoare annotation was computed. [2023-04-03 01:17:38,530 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 19) the Hoare annotation is: true [2023-04-03 01:17:38,531 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-03 01:17:38,531 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-03 01:17:38,531 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-03 01:17:38,532 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-03 01:17:38,532 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-03 01:17:38,532 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-03 01:17:38,533 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2023-04-03 01:17:38,535 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2023-04-03 01:17:38,536 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 11) the Hoare annotation is: true [2023-04-03 01:17:38,536 INFO L902 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2023-04-03 01:17:38,536 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-04-03 01:17:38,536 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2023-04-03 01:17:38,539 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-03 01:17:38,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 01:17:38,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 01:17:38 BoogieIcfgContainer [2023-04-03 01:17:38,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 01:17:38,548 INFO L158 Benchmark]: Toolchain (without parser) took 1473.57ms. Allocated memory was 186.6MB in the beginning and 306.2MB in the end (delta: 119.5MB). Free memory was 128.2MB in the beginning and 221.0MB in the end (delta: -92.8MB). Peak memory consumption was 27.8MB. Max. memory is 8.0GB. [2023-04-03 01:17:38,554 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 01:17:38,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.11ms. Allocated memory is still 186.6MB. Free memory was 128.2MB in the beginning and 118.4MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-03 01:17:38,557 INFO L158 Benchmark]: Boogie Preprocessor took 15.67ms. Allocated memory is still 186.6MB. Free memory was 118.4MB in the beginning and 116.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-03 01:17:38,557 INFO L158 Benchmark]: RCFGBuilder took 213.03ms. Allocated memory is still 186.6MB. Free memory was 116.9MB in the beginning and 106.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-03 01:17:38,557 INFO L158 Benchmark]: TraceAbstraction took 1072.49ms. Allocated memory was 186.6MB in the beginning and 306.2MB in the end (delta: 119.5MB). Free memory was 105.4MB in the beginning and 221.0MB in the end (delta: -115.6MB). Peak memory consumption was 4.7MB. Max. memory is 8.0GB. [2023-04-03 01:17:38,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 165.11ms. Allocated memory is still 186.6MB. Free memory was 128.2MB in the beginning and 118.4MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.67ms. Allocated memory is still 186.6MB. Free memory was 118.4MB in the beginning and 116.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 213.03ms. Allocated memory is still 186.6MB. Free memory was 116.9MB in the beginning and 106.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1072.49ms. Allocated memory was 186.6MB in the beginning and 306.2MB in the end (delta: 119.5MB). Free memory was 105.4MB in the beginning and 221.0MB in the end (delta: -115.6MB). Peak memory consumption was 4.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 29 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 106 SizeOfPredicates, 1 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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 01:17:38,573 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...