/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/nla-digbench-scaling/ps6-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:31:52,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:31:52,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:31:52,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:31:52,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:31:52,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:31:52,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:31:52,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:31:52,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:31:52,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:31:52,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:31:52,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:31:52,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:31:52,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:31:52,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:31:52,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:31:52,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:31:52,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:31:52,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:31:52,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:31:52,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:31:52,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:31:52,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:31:52,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:31:52,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 05:31:52,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:31:52,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:31:52,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:31:52,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:31:52,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:31:52,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:31:52,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:31:52,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:31:52,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:31:52,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:31:52,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:31:52,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:31:52,493 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:31:52,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:31:52,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:31:52,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:31:52,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:31:52,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:31:52,495 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:31:52,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:31:52,495 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:31:52,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:31:52,496 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:31:52,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:31:52,496 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:31:52,496 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:31:52,496 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:31:52,496 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:31:52,496 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:31:52,497 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:31:52,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:31:52,497 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:31:52,498 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:31:52,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:31:52,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:31:52,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:31:52,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:31:52,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:31:52,499 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:31:52,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:31:52,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:31:52,500 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:31:52,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:31:52,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:31:52,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:31:52,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:31:52,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:31:52,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:31:52,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:31:52,759 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:31:52,760 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:31:52,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2023-04-01 05:31:53,941 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:31:54,132 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:31:54,132 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2023-04-01 05:31:54,136 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08dd17dc3/0a48cc94ffee42149ab12fb8593d78da/FLAG620f4e53d [2023-04-01 05:31:54,153 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08dd17dc3/0a48cc94ffee42149ab12fb8593d78da [2023-04-01 05:31:54,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:31:54,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:31:54,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:31:54,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:31:54,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:31:54,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b7184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54, skipping insertion in model container [2023-04-01 05:31:54,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:31:54,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:31:54,255 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/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2023-04-01 05:31:54,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:31:54,271 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:31:54,278 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/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2023-04-01 05:31:54,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:31:54,291 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:31:54,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54 WrapperNode [2023-04-01 05:31:54,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:31:54,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:31:54,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:31:54,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:31:54,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:31:54,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:31:54,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:31:54,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:31:54,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (1/1) ... [2023-04-01 05:31:54,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:31:54,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:31:54,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:31:54,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:31:54,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:31:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:31:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:31:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 05:31:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:31:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:31:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:31:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:31:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:31:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:31:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-01 05:31:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 05:31:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:31:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:31:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:31:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:31:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:31:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:31:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:31:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:31:54,424 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:31:54,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:31:54,604 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:31:54,637 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:31:54,637 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 05:31:54,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:31:54 BoogieIcfgContainer [2023-04-01 05:31:54,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:31:54,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:31:54,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:31:54,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:31:54,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:31:54" (1/3) ... [2023-04-01 05:31:54,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5716dc8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:31:54, skipping insertion in model container [2023-04-01 05:31:54,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:31:54" (2/3) ... [2023-04-01 05:31:54,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5716dc8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:31:54, skipping insertion in model container [2023-04-01 05:31:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:31:54" (3/3) ... [2023-04-01 05:31:54,645 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2023-04-01 05:31:54,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:31:54,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:31:54,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:31:54,725 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;@3eda499b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:31:54,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:31:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 05:31:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-01 05:31:54,735 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:31:54,735 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:31:54,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:31:54,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:31:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash 395619074, now seen corresponding path program 1 times [2023-04-01 05:31:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:31:54,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403454193] [2023-04-01 05:31:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:31:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:31:54,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:31:54,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138730376] [2023-04-01 05:31:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:31:54,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:31:54,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:31:54,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:31:54,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:31:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:31:54,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 05:31:54,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:31:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 05:31:55,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:31:55,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:31:55,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403454193] [2023-04-01 05:31:55,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:31:55,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138730376] [2023-04-01 05:31:55,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138730376] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:31:55,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:31:55,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:31:55,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005968191] [2023-04-01 05:31:55,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:31:55,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:31:55,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:31:55,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:31:55,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:31:55,130 INFO L87 Difference]: Start difference. First operand has 25 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 05:31:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:31:55,302 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-04-01 05:31:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:31:55,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-04-01 05:31:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:31:55,309 INFO L225 Difference]: With dead ends: 51 [2023-04-01 05:31:55,309 INFO L226 Difference]: Without dead ends: 28 [2023-04-01 05:31:55,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:31:55,313 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:31:55,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:31:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-01 05:31:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-04-01 05:31:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 05:31:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-04-01 05:31:55,339 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2023-04-01 05:31:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:31:55,339 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-04-01 05:31:55,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 05:31:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-04-01 05:31:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 05:31:55,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:31:55,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:31:55,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 05:31:55,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-01 05:31:55,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:31:55,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:31:55,547 INFO L85 PathProgramCache]: Analyzing trace with hash 398349892, now seen corresponding path program 1 times [2023-04-01 05:31:55,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:31:55,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652477667] [2023-04-01 05:31:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:31:55,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:31:55,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:31:55,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187517469] [2023-04-01 05:31:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:31:55,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:31:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:31:55,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:31:55,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:31:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:31:55,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 05:31:55,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:31:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:31:55,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:31:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:31:55,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:31:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652477667] [2023-04-01 05:31:55,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:31:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187517469] [2023-04-01 05:31:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187517469] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:31:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1019331235] [2023-04-01 05:31:55,865 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-01 05:31:55,866 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:31:55,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:31:55,870 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:31:55,871 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:31:55,915 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:31:56,275 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 63 for LOIs [2023-04-01 05:31:56,389 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-01 05:31:56,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:31:56,397 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:31:56,956 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352#(and (exists ((v_main_~c~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_13 Int) (v_main_~y~0_BEFORE_CALL_13 Int) (v_main_~x~0_BEFORE_CALL_13 Int)) (and (or (and (<= 1 |#StackHeapBarrier|) (<= v_main_~k~0_BEFORE_CALL_13 5) (= v_main_~y~0_BEFORE_CALL_13 0) (= v_main_~c~0_BEFORE_CALL_9 0) (= v_main_~x~0_BEFORE_CALL_13 0) (<= 0 v_main_~k~0_BEFORE_CALL_13) (= |#NULL.offset| 0) (= |#NULL.base| 0)) (and (= v_main_~c~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_13) (<= 1 |#StackHeapBarrier|) (<= 1 (+ |#StackHeapBarrier| v_main_~k~0_BEFORE_CALL_13)) (<= v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~k~0_BEFORE_CALL_13 5) (<= v_main_~k~0_BEFORE_CALL_13 (+ v_main_~y~0_BEFORE_CALL_13 4)) (<= v_main_~y~0_BEFORE_CALL_13 6) (<= 1 v_main_~y~0_BEFORE_CALL_13) (<= v_main_~k~0_BEFORE_CALL_13 (+ |#StackHeapBarrier| 4)) (<= (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13) 11) (<= v_main_~y~0_BEFORE_CALL_13 (+ 5 |#StackHeapBarrier|)) (<= 0 v_main_~k~0_BEFORE_CALL_13) (<= 2 (+ v_main_~y~0_BEFORE_CALL_13 |#StackHeapBarrier|)) (= |#NULL.offset| 0) (<= 1 (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13)) (= |#NULL.base| 0))) (not (= (+ (* 6 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)) (* 2 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)) (* 5 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13))) (+ (* v_main_~x~0_BEFORE_CALL_13 12) (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:31:56,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:31:56,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:31:56,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-04-01 05:31:56,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329425329] [2023-04-01 05:31:56,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:31:56,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 05:31:56,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:31:56,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 05:31:56,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-04-01 05:31:56,959 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 05:31:57,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:31:57,056 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-04-01 05:31:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:31:57,057 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-04-01 05:31:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:31:57,058 INFO L225 Difference]: With dead ends: 39 [2023-04-01 05:31:57,058 INFO L226 Difference]: Without dead ends: 35 [2023-04-01 05:31:57,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-04-01 05:31:57,059 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:31:57,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 90 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:31:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-01 05:31:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-04-01 05:31:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 05:31:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-04-01 05:31:57,065 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2023-04-01 05:31:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:31:57,066 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-04-01 05:31:57,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 05:31:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-04-01 05:31:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-01 05:31:57,066 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:31:57,066 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:31:57,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 05:31:57,286 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,SelfDestructingSolverStorable1 [2023-04-01 05:31:57,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:31:57,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:31:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2024645172, now seen corresponding path program 1 times [2023-04-01 05:31:57,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:31:57,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730238757] [2023-04-01 05:31:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:31:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:31:57,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:31:57,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641440254] [2023-04-01 05:31:57,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:31:57,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:31:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:31:57,298 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) [2023-04-01 05:31:57,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 05:31:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:31:57,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-01 05:31:57,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:31:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 05:31:57,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:31:57,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:31:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730238757] [2023-04-01 05:31:57,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:31:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641440254] [2023-04-01 05:31:57,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641440254] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:31:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598679610] [2023-04-01 05:31:57,645 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:31:57,645 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:31:57,645 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:31:57,645 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:31:57,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:31:57,663 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:31:57,887 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:31:57,889 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-01 05:31:57,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:31:57,894 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:31:58,185 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '645#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:31:58,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:31:58,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:31:58,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-04-01 05:31:58,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175534489] [2023-04-01 05:31:58,186 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-01 05:31:58,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 05:31:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:31:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 05:31:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2023-04-01 05:31:58,187 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 05:31:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:31:58,296 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-04-01 05:31:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:31:58,296 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2023-04-01 05:31:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:31:58,297 INFO L225 Difference]: With dead ends: 43 [2023-04-01 05:31:58,297 INFO L226 Difference]: Without dead ends: 37 [2023-04-01 05:31:58,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-04-01 05:31:58,298 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:31:58,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 93 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:31:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-04-01 05:31:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-04-01 05:31:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 05:31:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2023-04-01 05:31:58,305 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 35 [2023-04-01 05:31:58,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:31:58,305 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-04-01 05:31:58,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 05:31:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2023-04-01 05:31:58,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 05:31:58,306 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:31:58,306 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:31:58,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 05:31:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:31:58,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:31:58,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:31:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash -170934026, now seen corresponding path program 2 times [2023-04-01 05:31:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:31:58,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436202160] [2023-04-01 05:31:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:31:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:31:58,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:31:58,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256277250] [2023-04-01 05:31:58,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 05:31:58,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:31:58,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:31:58,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:31:58,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 05:31:58,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-01 05:31:58,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 05:31:58,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-01 05:31:58,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:31:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 05:31:58,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:31:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-01 05:31:58,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:31:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436202160] [2023-04-01 05:31:58,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:31:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256277250] [2023-04-01 05:31:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256277250] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:31:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [900547326] [2023-04-01 05:31:58,907 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:31:58,907 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:31:58,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:31:58,908 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:31:58,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:31:58,919 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:31:59,172 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:31:59,174 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-01 05:31:59,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:31:59,178 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:31:59,619 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1046#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:31:59,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:31:59,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:31:59,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-04-01 05:31:59,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889463559] [2023-04-01 05:31:59,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:31:59,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 05:31:59,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:31:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 05:31:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2023-04-01 05:31:59,621 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-04-01 05:32:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:00,024 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2023-04-01 05:32:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 05:32:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) Word has length 42 [2023-04-01 05:32:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:00,025 INFO L225 Difference]: With dead ends: 55 [2023-04-01 05:32:00,025 INFO L226 Difference]: Without dead ends: 47 [2023-04-01 05:32:00,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=1072, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 05:32:00,026 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:00,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 154 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:32:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-01 05:32:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-04-01 05:32:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 12 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 05:32:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2023-04-01 05:32:00,035 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 42 [2023-04-01 05:32:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:00,036 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2023-04-01 05:32:00,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-04-01 05:32:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2023-04-01 05:32:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-01 05:32:00,037 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:00,037 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:00,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:00,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:00,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:00,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1677453900, now seen corresponding path program 3 times [2023-04-01 05:32:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:00,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67371668] [2023-04-01 05:32:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:00,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:32:00,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377569666] [2023-04-01 05:32:00,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 05:32:00,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:00,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:00,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:00,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 05:32:00,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 05:32:00,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 05:32:00,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 36 conjunts are in the unsatisfiable core [2023-04-01 05:32:00,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-04-01 05:32:00,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:32:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 05:32:00,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67371668] [2023-04-01 05:32:00,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:32:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377569666] [2023-04-01 05:32:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377569666] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:32:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122971149] [2023-04-01 05:32:00,748 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:32:00,748 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:32:00,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:32:00,749 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:32:00,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:32:00,771 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:32:01,009 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:32:01,012 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-01 05:32:01,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:32:01,016 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:32:01,414 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1628#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:32:01,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:32:01,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:32:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-04-01 05:32:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670007360] [2023-04-01 05:32:01,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:32:01,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-01 05:32:01,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-01 05:32:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 05:32:01,420 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 16 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 16 states have call predecessors, (19), 16 states have call successors, (19) [2023-04-01 05:32:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:02,250 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2023-04-01 05:32:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 05:32:02,252 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 16 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 16 states have call predecessors, (19), 16 states have call successors, (19) Word has length 63 [2023-04-01 05:32:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:02,252 INFO L225 Difference]: With dead ends: 73 [2023-04-01 05:32:02,252 INFO L226 Difference]: Without dead ends: 65 [2023-04-01 05:32:02,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 149 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=298, Invalid=1772, Unknown=0, NotChecked=0, Total=2070 [2023-04-01 05:32:02,254 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 37 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:02,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 267 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 05:32:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-04-01 05:32:02,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2023-04-01 05:32:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 18 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-01 05:32:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-04-01 05:32:02,270 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 63 [2023-04-01 05:32:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:02,270 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-04-01 05:32:02,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 16 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 16 states have call predecessors, (19), 16 states have call successors, (19) [2023-04-01 05:32:02,270 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-04-01 05:32:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-01 05:32:02,271 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:02,271 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:02,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:02,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:02,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:02,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:02,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1696052492, now seen corresponding path program 4 times [2023-04-01 05:32:02,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:02,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738309234] [2023-04-01 05:32:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:02,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:32:02,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959286604] [2023-04-01 05:32:02,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-01 05:32:02,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:02,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:02,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:02,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 05:32:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:02,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-01 05:32:02,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 308 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-04-01 05:32:02,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:32:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 224 proven. 1 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-04-01 05:32:02,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738309234] [2023-04-01 05:32:02,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:32:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959286604] [2023-04-01 05:32:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959286604] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:32:02,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1345514855] [2023-04-01 05:32:02,964 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:32:02,964 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:32:02,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:32:02,964 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:32:02,964 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:32:02,974 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:32:03,163 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:32:03,164 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-01 05:32:03,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:32:03,168 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:32:03,603 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2536#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:32:03,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:32:03,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:32:03,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2023-04-01 05:32:03,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329407649] [2023-04-01 05:32:03,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:32:03,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-01 05:32:03,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-01 05:32:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2023-04-01 05:32:03,606 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 26 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 26 states have call predecessors, (31), 26 states have call successors, (31) [2023-04-01 05:32:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:03,662 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2023-04-01 05:32:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 05:32:03,664 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 26 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 26 states have call predecessors, (31), 26 states have call successors, (31) Word has length 105 [2023-04-01 05:32:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:03,664 INFO L225 Difference]: With dead ends: 69 [2023-04-01 05:32:03,664 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 05:32:03,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2023-04-01 05:32:03,666 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:03,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:32:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 05:32:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 05:32:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 05:32:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 05:32:03,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2023-04-01 05:32:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:03,667 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 05:32:03,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 26 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 26 states have call predecessors, (31), 26 states have call successors, (31) [2023-04-01 05:32:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 05:32:03,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 05:32:03,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:32:03,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:03,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:03,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 05:32:04,390 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-01 05:32:04,390 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-01 05:32:04,391 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 8) the Hoare annotation is: true [2023-04-01 05:32:04,391 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-01 05:32:04,391 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 5)) (.cse1 (< 4 main_~k~0))) (or (and .cse0 (or (= main_~k~0 3) (< 3 main_~k~0)) (= 276 main_~x~0) (= main_~y~0 3) (= main_~c~0 3)) (and (= main_~x~0 33) (= main_~y~0 2) .cse0 (or (= main_~k~0 2) (< 2 main_~k~0)) (= main_~c~0 2)) (and (= main_~x~0 0) .cse0 (<= 0 main_~k~0) (= main_~c~0 0) (= main_~y~0 0)) (and .cse0 (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)) (and .cse0 (or (= main_~k~0 4) .cse1) (= main_~y~0 4) (= main_~c~0 4) (= 1300 main_~x~0)) (and (<= main_~c~0 5) .cse0 (= 4425 main_~x~0) (= 5 main_~y~0) (<= 5 main_~c~0) .cse1))) [2023-04-01 05:32:04,391 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2023-04-01 05:32:04,391 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 5)) (.cse1 (< 4 main_~k~0))) (or (and .cse0 (or (= main_~k~0 3) (< 3 main_~k~0)) (= 276 main_~x~0) (= main_~y~0 3) (= main_~c~0 3)) (and (= main_~x~0 33) (= main_~y~0 2) .cse0 (or (= main_~k~0 2) (< 2 main_~k~0)) (= main_~c~0 2)) (and (= main_~x~0 0) .cse0 (<= 0 main_~k~0) (= main_~c~0 0) (= main_~y~0 0)) (and .cse0 (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)) (and .cse0 (or (= main_~k~0 4) .cse1) (= main_~y~0 4) (= main_~c~0 4) (= 1300 main_~x~0)) (and (<= main_~c~0 5) .cse0 (= 4425 main_~x~0) (= 5 main_~y~0) (<= 5 main_~c~0) .cse1))) [2023-04-01 05:32:04,391 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (let ((.cse2 (* main_~k~0 main_~y~0)) (.cse0 (+ main_~c~0 1)) (.cse1 (* main_~y~0 main_~y~0))) (and (or (<= main_~k~0 .cse0) (< (+ main_~c~0 2) main_~k~0) (= (+ 4 .cse1 (* main_~y~0 4)) (+ (* main_~k~0 2) .cse2))) (<= main_~k~0 256) (= .cse1 .cse2) (or (= (+ main_~k~0 .cse2) (+ (* main_~y~0 2) .cse1 1)) (<= main_~k~0 main_~c~0) (< .cse0 main_~k~0)) (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) .cse1)))) (and (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0))) [2023-04-01 05:32:04,391 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 17 42) no Hoare annotation was computed. [2023-04-01 05:32:04,391 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-04-01 05:32:04,391 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2023-04-01 05:32:04,391 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= main_~k~0 5) (<= 0 main_~k~0)) [2023-04-01 05:32:04,391 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 42) the Hoare annotation is: true [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-04-01 05:32:04,392 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (let ((.cse2 (* main_~k~0 main_~y~0)) (.cse0 (+ main_~c~0 1)) (.cse1 (* main_~y~0 main_~y~0))) (and (or (<= main_~k~0 .cse0) (< (+ main_~c~0 2) main_~k~0) (= (+ 4 .cse1 (* main_~y~0 4)) (+ (* main_~k~0 2) .cse2))) (<= main_~k~0 256) (= .cse1 .cse2) (or (= (+ main_~k~0 .cse2) (+ (* main_~y~0 2) .cse1 1)) (<= main_~k~0 main_~c~0) (< .cse0 main_~k~0)) (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) .cse1)))) (and (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0))) [2023-04-01 05:32:04,392 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:32:04,392 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 05:32:04,392 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-04-01 05:32:04,392 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-04-01 05:32:04,392 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-04-01 05:32:04,394 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-04-01 05:32:04,396 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:32:04,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:32:04 BoogieIcfgContainer [2023-04-01 05:32:04,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:32:04,416 INFO L158 Benchmark]: Toolchain (without parser) took 10260.80ms. Allocated memory was 181.4MB in the beginning and 319.8MB in the end (delta: 138.4MB). Free memory was 139.7MB in the beginning and 160.4MB in the end (delta: -20.7MB). Peak memory consumption was 119.3MB. Max. memory is 8.0GB. [2023-04-01 05:32:04,416 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory was 139.8MB in the beginning and 139.6MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:32:04,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.51ms. Allocated memory is still 181.4MB. Free memory was 139.7MB in the beginning and 128.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 05:32:04,417 INFO L158 Benchmark]: Boogie Preprocessor took 18.63ms. Allocated memory is still 181.4MB. Free memory was 128.9MB in the beginning and 127.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 05:32:04,417 INFO L158 Benchmark]: RCFGBuilder took 327.82ms. Allocated memory is still 181.4MB. Free memory was 127.5MB in the beginning and 115.6MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 05:32:04,417 INFO L158 Benchmark]: TraceAbstraction took 9775.32ms. Allocated memory was 181.4MB in the beginning and 319.8MB in the end (delta: 138.4MB). Free memory was 114.9MB in the beginning and 160.4MB in the end (delta: -45.5MB). Peak memory consumption was 94.1MB. Max. memory is 8.0GB. [2023-04-01 05:32:04,418 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 139.8MB in the beginning and 139.6MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 135.51ms. Allocated memory is still 181.4MB. Free memory was 139.7MB in the beginning and 128.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.63ms. Allocated memory is still 181.4MB. Free memory was 128.9MB in the beginning and 127.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 327.82ms. Allocated memory is still 181.4MB. Free memory was 127.5MB in the beginning and 115.6MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 9775.32ms. Allocated memory was 181.4MB in the beginning and 319.8MB in the end (delta: 138.4MB). Free memory was 114.9MB in the beginning and 160.4MB in the end (delta: -45.5MB). Peak memory consumption was 94.1MB. 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: 12]: 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 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 6, TraceHistogramMax: 14, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 795 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 658 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 946 IncrementalHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 137 mSDtfsCounter, 946 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 638 SyntacticMatches, 21 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=5, InterpolantAutomatonStates: 69, 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, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 41 PreInvPairs, 65 NumberOfFragments, 468 HoareAnnotationTreeSize, 41 FomulaSimplifications, 949 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 802 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 286 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 2215 SizeOfPredicates, 16 NumberOfNonLiveVariables, 801 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 1370/1489 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: 28]: Loop Invariant Derived loop invariant: ((((((((k <= 5 && (k == 3 || 3 < k)) && 276 == x) && y == 3) && c == 3) || ((((x == 33 && y == 2) && k <= 5) && (k == 2 || 2 < k)) && c == 2)) || ((((x == 0 && k <= 5) && 0 <= k) && c == 0) && y == 0)) || ((((k <= 5 && y == 1) && x == 1) && 0 < k) && c == 1)) || ((((k <= 5 && (k == 4 || 4 < k)) && y == 4) && c == 4) && 1300 == x)) || (((((c <= 5 && k <= 5) && 4425 == x) && 5 == y) && 5 <= c) && 4 < k) RESULT: Ultimate proved your program to be correct! [2023-04-01 05:32:04,460 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...