/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 IntervalDomain -i ../sv-benchmarks/c/eca-rers2012/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 21:09:20,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 21:09:20,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 21:09:20,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 21:09:20,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 21:09:20,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 21:09:20,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 21:09:20,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 21:09:20,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 21:09:20,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 21:09:20,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 21:09:20,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 21:09:20,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 21:09:20,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 21:09:20,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 21:09:20,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 21:09:20,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 21:09:20,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 21:09:20,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 21:09:20,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 21:09:20,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 21:09:20,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 21:09:20,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 21:09:20,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 21:09:20,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 21:09:20,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 21:09:20,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 21:09:20,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 21:09:20,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 21:09:20,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 21:09:20,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 21:09:20,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 21:09:20,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 21:09:20,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 21:09:20,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 21:09:20,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 21:09:20,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 21:09:20,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 21:09:20,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 21:09:20,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 21:09:20,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 21:09:20,509 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 [2023-03-31 21:09:20,533 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 21:09:20,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 21:09:20,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 21:09:20,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 21:09:20,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 21:09:20,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 21:09:20,534 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 21:09:20,534 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 21:09:20,534 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 21:09:20,534 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 21:09:20,535 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 21:09:20,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 21:09:20,535 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 21:09:20,535 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 21:09:20,535 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 21:09:20,536 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 21:09:20,536 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 21:09:20,536 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 21:09:20,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 21:09:20,536 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 21:09:20,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 21:09:20,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 21:09:20,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 21:09:20,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 21:09:20,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 21:09:20,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 21:09:20,537 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 21:09:20,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 21:09:20,537 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 21:09:20,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 21:09:20,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:09:20,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 21:09:20,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 21:09:20,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 21:09:20,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 21:09:20,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 21:09:20,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 21:09:20,752 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 21:09:20,753 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 21:09:20,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2023-03-31 21:09:21,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 21:09:21,963 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 21:09:21,963 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2023-03-31 21:09:21,971 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423e93445/6a03ed435b5146c4a467e89d4d916bb1/FLAG0545b2435 [2023-03-31 21:09:21,981 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423e93445/6a03ed435b5146c4a467e89d4d916bb1 [2023-03-31 21:09:21,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 21:09:21,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 21:09:21,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 21:09:21,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 21:09:21,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 21:09:21,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:09:21" (1/1) ... [2023-03-31 21:09:21,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb9ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:21, skipping insertion in model container [2023-03-31 21:09:21,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:09:21" (1/1) ... [2023-03-31 21:09:21,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 21:09:22,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 21:09:22,223 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/eca-rers2012/Problem01_label17.c[19973,19986] [2023-03-31 21:09:22,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:09:22,247 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 21:09:22,306 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/eca-rers2012/Problem01_label17.c[19973,19986] [2023-03-31 21:09:22,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:09:22,321 INFO L208 MainTranslator]: Completed translation [2023-03-31 21:09:22,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22 WrapperNode [2023-03-31 21:09:22,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 21:09:22,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 21:09:22,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 21:09:22,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 21:09:22,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,384 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 21:09:22,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 21:09:22,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 21:09:22,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 21:09:22,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (1/1) ... [2023-03-31 21:09:22,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:09:22,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:09:22,448 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) [2023-03-31 21:09:22,459 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 [2023-03-31 21:09:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 21:09:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 21:09:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 21:09:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-31 21:09:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 21:09:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-31 21:09:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 21:09:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 21:09:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 21:09:22,529 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 21:09:22,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 21:09:23,212 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 21:09:23,350 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 21:09:23,350 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 21:09:23,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:09:23 BoogieIcfgContainer [2023-03-31 21:09:23,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 21:09:23,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 21:09:23,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 21:09:23,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 21:09:23,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:09:21" (1/3) ... [2023-03-31 21:09:23,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64deb634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:09:23, skipping insertion in model container [2023-03-31 21:09:23,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:09:22" (2/3) ... [2023-03-31 21:09:23,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64deb634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:09:23, skipping insertion in model container [2023-03-31 21:09:23,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:09:23" (3/3) ... [2023-03-31 21:09:23,361 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2023-03-31 21:09:23,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 21:09:23,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 21:09:23,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 21:09:23,418 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;@56718fb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 21:09:23,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 21:09:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 78 states have (on average 1.8974358974358974) internal successors, (148), 79 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:09:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-03-31 21:09:23,429 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:09:23,430 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, 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, 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] [2023-03-31 21:09:23,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:09:23,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:09:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2062133534, now seen corresponding path program 1 times [2023-03-31 21:09:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:09:23,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069642154] [2023-03-31 21:09:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:09:23,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:09:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:09:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:09:23,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:09:23,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069642154] [2023-03-31 21:09:23,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069642154] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:09:23,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:09:23,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 21:09:23,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012152513] [2023-03-31 21:09:23,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:09:23,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:09:23,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:09:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:09:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:09:23,922 INFO L87 Difference]: Start difference. First operand has 86 states, 78 states have (on average 1.8974358974358974) internal successors, (148), 79 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:09:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:09:24,209 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2023-03-31 21:09:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:09:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2023-03-31 21:09:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:09:24,217 INFO L225 Difference]: With dead ends: 246 [2023-03-31 21:09:24,217 INFO L226 Difference]: Without dead ends: 157 [2023-03-31 21:09:24,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:09:24,221 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 21:09:24,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 21:09:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-03-31 21:09:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-03-31 21:09:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 149 states have (on average 1.8926174496644295) internal successors, (282), 149 states have internal predecessors, (282), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-03-31 21:09:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 291 transitions. [2023-03-31 21:09:24,253 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 291 transitions. Word has length 77 [2023-03-31 21:09:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:09:24,253 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 291 transitions. [2023-03-31 21:09:24,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:09:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 291 transitions. [2023-03-31 21:09:24,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-03-31 21:09:24,256 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:09:24,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:09:24,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 21:09:24,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:09:24,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:09:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2050463610, now seen corresponding path program 1 times [2023-03-31 21:09:24,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:09:24,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125537223] [2023-03-31 21:09:24,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:09:24,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:09:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:09:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:09:24,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:09:24,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125537223] [2023-03-31 21:09:24,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125537223] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:09:24,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:09:24,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 21:09:24,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468913555] [2023-03-31 21:09:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:09:24,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 21:09:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:09:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 21:09:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 21:09:24,548 INFO L87 Difference]: Start difference. First operand 157 states and 291 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 21:09:24,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:09:24,903 INFO L93 Difference]: Finished difference Result 477 states and 896 transitions. [2023-03-31 21:09:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 21:09:24,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2023-03-31 21:09:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:09:24,907 INFO L225 Difference]: With dead ends: 477 [2023-03-31 21:09:24,907 INFO L226 Difference]: Without dead ends: 325 [2023-03-31 21:09:24,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-03-31 21:09:24,908 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 21:09:24,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 49 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 21:09:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-03-31 21:09:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 317. [2023-03-31 21:09:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 300 states have (on average 1.6066666666666667) internal successors, (482), 305 states have internal predecessors, (482), 6 states have call successors, (6), 6 states have call predecessors, (6), 10 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-03-31 21:09:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 508 transitions. [2023-03-31 21:09:24,928 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 508 transitions. Word has length 94 [2023-03-31 21:09:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:09:24,929 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 508 transitions. [2023-03-31 21:09:24,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 21:09:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 508 transitions. [2023-03-31 21:09:24,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-03-31 21:09:24,931 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:09:24,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:09:24,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 21:09:24,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:09:24,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:09:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1147201754, now seen corresponding path program 1 times [2023-03-31 21:09:24,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:09:24,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277070624] [2023-03-31 21:09:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:09:24,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:09:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:09:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 21:09:25,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:09:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277070624] [2023-03-31 21:09:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277070624] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:09:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828743026] [2023-03-31 21:09:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:09:25,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:09:25,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:09:25,112 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) [2023-03-31 21:09:25,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 21:09:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:09:25,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 21:09:25,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:09:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 21:09:25,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 21:09:25,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828743026] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:09:25,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 21:09:25,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-03-31 21:09:25,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377820250] [2023-03-31 21:09:25,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:09:25,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 21:09:25,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:09:25,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 21:09:25,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 21:09:25,287 INFO L87 Difference]: Start difference. First operand 317 states and 508 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:09:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:09:25,639 INFO L93 Difference]: Finished difference Result 811 states and 1365 transitions. [2023-03-31 21:09:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 21:09:25,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 107 [2023-03-31 21:09:25,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:09:25,644 INFO L225 Difference]: With dead ends: 811 [2023-03-31 21:09:25,644 INFO L226 Difference]: Without dead ends: 499 [2023-03-31 21:09:25,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 21:09:25,648 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 235 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 21:09:25,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 37 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 21:09:25,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-03-31 21:09:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2023-03-31 21:09:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 450 states have (on average 1.551111111111111) internal successors, (698), 459 states have internal predecessors, (698), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2023-03-31 21:09:25,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 750 transitions. [2023-03-31 21:09:25,690 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 750 transitions. Word has length 107 [2023-03-31 21:09:25,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:09:25,691 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 750 transitions. [2023-03-31 21:09:25,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:09:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 750 transitions. [2023-03-31 21:09:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-03-31 21:09:25,698 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:09:25,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:09:25,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 21:09:25,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:09:25,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:09:25,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:09:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash 370731174, now seen corresponding path program 1 times [2023-03-31 21:09:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:09:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549046583] [2023-03-31 21:09:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:09:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:09:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:09:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 21:09:26,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:09:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549046583] [2023-03-31 21:09:26,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549046583] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:09:26,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606723797] [2023-03-31 21:09:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:09:26,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:09:26,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:09:26,341 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) [2023-03-31 21:09:26,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 21:09:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:09:26,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 21:09:26,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:09:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-31 21:09:26,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 21:09:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606723797] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:09:26,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 21:09:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-31 21:09:26,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309004796] [2023-03-31 21:09:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:09:26,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:09:26,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:09:26,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:09:26,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:09:26,579 INFO L87 Difference]: Start difference. First operand 475 states and 750 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:09:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:09:26,778 INFO L93 Difference]: Finished difference Result 1336 states and 2183 transitions. [2023-03-31 21:09:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:09:26,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (4), 2 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 113 [2023-03-31 21:09:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:09:26,783 INFO L225 Difference]: With dead ends: 1336 [2023-03-31 21:09:26,783 INFO L226 Difference]: Without dead ends: 866 [2023-03-31 21:09:26,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:09:26,787 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 21:09:26,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 40 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 21:09:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-03-31 21:09:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 789. [2023-03-31 21:09:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 749 states have (on average 1.506008010680908) internal successors, (1128), 765 states have internal predecessors, (1128), 12 states have call successors, (12), 12 states have call predecessors, (12), 27 states have return successors, (92), 11 states have call predecessors, (92), 11 states have call successors, (92) [2023-03-31 21:09:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1232 transitions. [2023-03-31 21:09:26,815 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1232 transitions. Word has length 113 [2023-03-31 21:09:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:09:26,817 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 1232 transitions. [2023-03-31 21:09:26,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:09:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1232 transitions. [2023-03-31 21:09:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-03-31 21:09:26,820 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:09:26,820 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2023-03-31 21:09:26,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 21:09:27,027 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,SelfDestructingSolverStorable3 [2023-03-31 21:09:27,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:09:27,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:09:27,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2099318252, now seen corresponding path program 1 times [2023-03-31 21:09:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:09:27,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759789534] [2023-03-31 21:09:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:09:27,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:09:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:09:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 47 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 21:09:27,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:09:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759789534] [2023-03-31 21:09:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759789534] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:09:27,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031591273] [2023-03-31 21:09:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:09:27,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:09:27,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:09:27,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:09:27,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 21:09:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:09:27,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 21:09:27,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:09:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-31 21:09:27,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 21:09:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031591273] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:09:27,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 21:09:27,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-31 21:09:27,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933961004] [2023-03-31 21:09:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:09:27,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:09:27,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:09:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:09:27,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:09:27,518 INFO L87 Difference]: Start difference. First operand 789 states and 1232 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:09:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:09:27,728 INFO L93 Difference]: Finished difference Result 1725 states and 2789 transitions. [2023-03-31 21:09:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:09:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (4), 2 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 130 [2023-03-31 21:09:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:09:27,729 INFO L225 Difference]: With dead ends: 1725 [2023-03-31 21:09:27,729 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 21:09:27,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:09:27,732 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 21:09:27,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 128 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 21:09:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 21:09:27,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 21:09:27,732 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) [2023-03-31 21:09:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 21:09:27,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2023-03-31 21:09:27,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:09:27,733 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 21:09:27,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:09:27,733 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 21:09:27,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 21:09:27,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 21:09:27,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 21:09:27,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:09:27,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 21:09:28,224 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-03-31 21:09:28,224 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-03-31 21:09:28,226 INFO L895 garLoopResultBuilder]: At program point L601(line 601) the Hoare annotation is: (let ((.cse0 (<= ~a16~0 5))) (or (and (<= ~a7~0 0) (= ~a21~0 1) (= ~a17~0 1) .cse0) (< 0 |old(~a7~0)|) (and (<= ~a17~0 0) .cse0) (not (= |old(~a21~0)| 1)) (not (= 14 ~a8~0)) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|))) [2023-03-31 21:09:28,226 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 587 604) no Hoare annotation was computed. [2023-03-31 21:09:28,226 INFO L899 garLoopResultBuilder]: For program point L601-1(line 601) no Hoare annotation was computed. [2023-03-31 21:09:28,226 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-03-31 21:09:28,227 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= ~a16~0 5))) (or (and (<= ~a7~0 0) (= ~a21~0 1) (= ~a17~0 1) .cse0) (< 0 |old(~a7~0)|) (and (<= ~a17~0 0) .cse0) (not (= |old(~a21~0)| 1)) (not (= 14 ~a8~0)) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|))) [2023-03-31 21:09:28,227 INFO L899 garLoopResultBuilder]: For program point L593-3(lines 587 604) no Hoare annotation was computed. [2023-03-31 21:09:28,228 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 587 604) the Hoare annotation is: (or (< 0 |old(~a7~0)|) (not (= |old(~a21~0)| 1)) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|) (and (<= ~a7~0 0) (<= ~a16~0 |old(~a16~0)|) (= ~a21~0 1) (= ~a17~0 1) (not (= 14 ~a8~0)))) [2023-03-31 21:09:28,229 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= ~a21~0 |old(~a21~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a17~0 |old(~a17~0)|)) [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point L534(line 534) no Hoare annotation was computed. [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-03-31 21:09:28,229 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-03-31 21:09:28,230 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-03-31 21:09:28,230 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-03-31 21:09:28,230 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-03-31 21:09:28,230 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-03-31 21:09:28,230 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-03-31 21:09:28,230 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-03-31 21:09:28,230 INFO L899 garLoopResultBuilder]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 534) no Hoare annotation was computed. [2023-03-31 21:09:28,230 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-03-31 21:09:28,231 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-03-31 21:09:28,231 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-03-31 21:09:28,231 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-03-31 21:09:28,231 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-03-31 21:09:28,231 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-03-31 21:09:28,231 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-03-31 21:09:28,231 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point calculate_outputFINAL(lines 40 585) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point calculate_outputEXIT(lines 40 585) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-03-31 21:09:28,232 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-03-31 21:09:28,233 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-03-31 21:09:28,234 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-03-31 21:09:28,234 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-03-31 21:09:28,234 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-03-31 21:09:28,234 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-03-31 21:09:28,234 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-03-31 21:09:28,234 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-03-31 21:09:28,234 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-03-31 21:09:28,235 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a21~0 |old(~a21~0)|)) (.cse2 (<= ~a16~0 |old(~a16~0)|)) (.cse3 (= ~a17~0 |old(~a17~0)|)) (.cse6 (< 0 |old(~a17~0)|)) (.cse7 (< 5 |old(~a16~0)|)) (.cse4 (<= ~a7~0 0)) (.cse5 (< 0 |old(~a7~0)|)) (.cse8 (not (= |old(~a21~0)| 1))) (.cse0 (= 14 |old(~a8~0)|)) (.cse9 (not (= |old(~a17~0)| 1)))) (and (or .cse0 (and .cse1 .cse2 .cse3 (not (= 14 ~a8~0)))) (or .cse4 .cse5 .cse6 .cse0) (or .cse4 .cse5 .cse6 .cse7) (or (and .cse4 .cse2 (= ~a21~0 1) (= ~a17~0 1)) .cse5 .cse8 .cse9 .cse7) (or (and .cse1 .cse2 .cse3) .cse6 .cse7) (or .cse4 .cse5 .cse8 .cse0 .cse9))) [2023-03-31 21:09:28,235 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-03-31 21:09:28,235 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-03-31 21:09:28,235 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-03-31 21:09:28,235 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-03-31 21:09:28,237 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-03-31 21:09:28,237 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-03-31 21:09:28,238 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-03-31 21:09:28,238 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-03-31 21:09:28,238 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-03-31 21:09:28,239 INFO L899 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2023-03-31 21:09:28,239 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-03-31 21:09:28,239 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-03-31 21:09:28,239 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-03-31 21:09:28,239 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-03-31 21:09:28,239 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 21:09:28,239 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= ~a21~0 1) (= ~a17~0 1) (<= ~a16~0 5) (not (= 14 ~a8~0))) [2023-03-31 21:09:28,239 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 21:09:28,239 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 21:09:28,241 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-03-31 21:09:28,242 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 21:09:28,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 09:09:28 BoogieIcfgContainer [2023-03-31 21:09:28,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 21:09:28,257 INFO L158 Benchmark]: Toolchain (without parser) took 6272.91ms. Allocated memory was 320.9MB in the beginning and 451.9MB in the end (delta: 131.1MB). Free memory was 274.2MB in the beginning and 217.9MB in the end (delta: 56.3MB). Peak memory consumption was 188.4MB. Max. memory is 8.0GB. [2023-03-31 21:09:28,257 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory was 127.7MB in the beginning and 127.5MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 21:09:28,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.56ms. Allocated memory is still 320.9MB. Free memory was 274.2MB in the beginning and 246.4MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-03-31 21:09:28,257 INFO L158 Benchmark]: Boogie Preprocessor took 68.84ms. Allocated memory is still 320.9MB. Free memory was 246.4MB in the beginning and 241.7MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-03-31 21:09:28,257 INFO L158 Benchmark]: RCFGBuilder took 961.24ms. Allocated memory is still 320.9MB. Free memory was 241.7MB in the beginning and 187.2MB in the end (delta: 54.5MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. [2023-03-31 21:09:28,258 INFO L158 Benchmark]: TraceAbstraction took 4900.87ms. Allocated memory was 320.9MB in the beginning and 451.9MB in the end (delta: 131.1MB). Free memory was 186.7MB in the beginning and 217.9MB in the end (delta: -31.2MB). Peak memory consumption was 100.4MB. Max. memory is 8.0GB. [2023-03-31 21:09:28,259 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 181.4MB. Free memory was 127.7MB in the beginning and 127.5MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 337.56ms. Allocated memory is still 320.9MB. Free memory was 274.2MB in the beginning and 246.4MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 68.84ms. Allocated memory is still 320.9MB. Free memory was 246.4MB in the beginning and 241.7MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 961.24ms. Allocated memory is still 320.9MB. Free memory was 241.7MB in the beginning and 187.2MB in the end (delta: 54.5MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4900.87ms. Allocated memory was 320.9MB in the beginning and 451.9MB in the end (delta: 131.1MB). Free memory was 186.7MB in the beginning and 217.9MB in the end (delta: -31.2MB). Peak memory consumption was 100.4MB. 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: 534]: 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, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 557 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 557 mSDsluCounter, 284 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 430 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1564 IncrementalHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 430 mSolverCounterUnsat, 194 mSDtfsCounter, 1564 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=789occurred in iteration=4, InterpolantAutomatonStates: 23, 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, 5 MinimizatonAttempts, 109 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 41 PreInvPairs, 65 NumberOfFragments, 255 HoareAnnotationTreeSize, 41 FomulaSimplifications, 616 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 353 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 871 NumberOfCodeBlocks, 871 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 863 ConstructedInterpolants, 0 QuantifiedInterpolants, 1841 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1403 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 277/314 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((a7 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) || 0 < \old(a7)) || (a17 <= 0 && a16 <= 5)) || !(\old(a21) == 1)) || !(14 == a8)) || 14 == \old(a8)) || !(\old(a17) == 1)) || 5 < \old(a16) RESULT: Ultimate proved your program to be correct! [2023-03-31 21:09:28,297 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...