/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/mannadiv_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:26:52,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:26:52,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:26:52,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:26:52,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:26:52,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:26:52,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:26:52,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:26:52,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:26:52,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:26:52,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:26:52,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:26:52,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:26:52,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:26:52,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:26:52,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:26:52,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:26:52,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:26:52,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:26:52,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:26:52,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:26:52,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:26:52,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:26:52,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:26:52,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 05:26:52,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:26:52,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:26:52,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:26:52,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:26:52,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:26:52,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:26:52,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:26:52,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:26:52,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:26:52,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:26:52,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:26:52,308 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 05:26:52,334 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:26:52,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:26:52,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:26:52,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:26:52,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:26:52,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:26:52,336 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:26:52,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:26:52,336 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:26:52,336 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:26:52,337 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:26:52,337 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:26:52,337 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:26:52,337 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:26:52,337 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:26:52,337 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:26:52,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:26:52,337 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:26:52,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:26:52,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:26:52,339 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:26:52,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:26:52,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:26:52,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:26:52,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:26:52,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:26:52,339 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:26:52,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:26:52,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:26:52,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:26:52,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:26:52,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:26:52,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:26:52,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:26:52,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:26:52,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:26:52,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:26:52,529 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:26:52,529 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:26:52,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2023-04-01 05:26:53,388 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:26:53,567 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:26:53,567 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2023-04-01 05:26:53,571 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba10d283/74baa65286e64f8a905ae244861acb89/FLAG56e5fa9fb [2023-04-01 05:26:53,579 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba10d283/74baa65286e64f8a905ae244861acb89 [2023-04-01 05:26:53,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:26:53,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:26:53,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:26:53,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:26:53,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:26:53,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7caec784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53, skipping insertion in model container [2023-04-01 05:26:53,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:26:53,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:26:53,708 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/mannadiv_unwindbound5.c[573,586] [2023-04-01 05:26:53,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:26:53,722 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:26:53,737 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/mannadiv_unwindbound5.c[573,586] [2023-04-01 05:26:53,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:26:53,751 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:26:53,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53 WrapperNode [2023-04-01 05:26:53,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:26:53,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:26:53,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:26:53,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:26:53,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:26:53,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:26:53,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:26:53,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:26:53,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (1/1) ... [2023-04-01 05:26:53,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:26:53,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:26:53,800 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 05:26:53,801 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 05:26:53,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:26:53,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:26:53,822 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:26:53,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 05:26:53,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:26:53,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:26:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:26:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:26:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:26:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:26:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:26:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 05:26:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:26:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:26:53,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:26:53,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:26:53,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:26:53,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:26:53,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:26:53,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:26:53,867 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:26:53,868 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:26:53,962 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:26:53,989 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:26:53,990 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 05:26:53,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:26:53 BoogieIcfgContainer [2023-04-01 05:26:53,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:26:53,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:26:53,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:26:53,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:26:53,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:26:53" (1/3) ... [2023-04-01 05:26:53,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b17b323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:26:53, skipping insertion in model container [2023-04-01 05:26:53,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:26:53" (2/3) ... [2023-04-01 05:26:53,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b17b323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:26:53, skipping insertion in model container [2023-04-01 05:26:53,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:26:53" (3/3) ... [2023-04-01 05:26:53,996 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound5.c [2023-04-01 05:26:54,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:26:54,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:26:54,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:26:54,046 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;@5385d928, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:26:54,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:26:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 05:26:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-01 05:26:54,060 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:26:54,060 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:26:54,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:26:54,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:26:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1539655439, now seen corresponding path program 1 times [2023-04-01 05:26:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:26:54,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946016144] [2023-04-01 05:26:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:26:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:26:54,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:26:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946016144] [2023-04-01 05:26:54,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-01 05:26:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961105919] [2023-04-01 05:26:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:54,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:26:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:26:54,159 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 05:26:54,160 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 05:26:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:26:54,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-01 05:26:54,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:26:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:26:54,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:26:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961105919] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:26:54,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:26:54,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 05:26:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362912431] [2023-04-01 05:26:54,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:26:54,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 05:26:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:26:54,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 05:26:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:26:54,262 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 05:26:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:26:54,283 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2023-04-01 05:26:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 05:26:54,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-04-01 05:26:54,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:26:54,294 INFO L225 Difference]: With dead ends: 40 [2023-04-01 05:26:54,295 INFO L226 Difference]: Without dead ends: 21 [2023-04-01 05:26:54,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:26:54,302 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:26:54,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:26:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-04-01 05:26:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-04-01 05:26:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 05:26:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-04-01 05:26:54,327 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2023-04-01 05:26:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:26:54,328 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-04-01 05:26:54,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 05:26:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-04-01 05:26:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 05:26:54,329 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:26:54,329 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:26:54,336 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 05:26:54,535 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 05:26:54,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:26:54,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:26:54,536 INFO L85 PathProgramCache]: Analyzing trace with hash -98483365, now seen corresponding path program 1 times [2023-04-01 05:26:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:26:54,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396341617] [2023-04-01 05:26:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:26:54,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:26:54,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650764632] [2023-04-01 05:26:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:54,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:26:54,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:26:54,556 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 05:26:54,558 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 05:26:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:26:54,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 05:26:54,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:26:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:26:54,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:26:54,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:26:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396341617] [2023-04-01 05:26:54,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:26:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650764632] [2023-04-01 05:26:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650764632] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:26:54,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:26:54,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:26:54,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773129814] [2023-04-01 05:26:54,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:26:54,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:26:54,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:26:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:26:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:26:54,671 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 05:26:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:26:54,691 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2023-04-01 05:26:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 05:26:54,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2023-04-01 05:26:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:26:54,692 INFO L225 Difference]: With dead ends: 30 [2023-04-01 05:26:54,692 INFO L226 Difference]: Without dead ends: 23 [2023-04-01 05:26:54,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:26:54,693 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:26:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:26:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-01 05:26:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-04-01 05:26:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 05:26:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-04-01 05:26:54,698 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2023-04-01 05:26:54,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:26:54,698 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-04-01 05:26:54,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 05:26:54,698 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-04-01 05:26:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 05:26:54,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:26:54,699 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:26:54,706 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 05:26:54,906 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 05:26:54,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:26:54,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:26:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash -96695905, now seen corresponding path program 1 times [2023-04-01 05:26:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:26:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144377955] [2023-04-01 05:26:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:54,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:26:54,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:26:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158082118] [2023-04-01 05:26:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:54,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:26:54,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:26:54,925 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 05:26:54,926 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 05:26:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:26:54,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-01 05:26:54,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:26:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:26:55,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:26:55,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:26:55,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144377955] [2023-04-01 05:26:55,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:26:55,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158082118] [2023-04-01 05:26:55,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158082118] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:26:55,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:26:55,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 05:26:55,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863488426] [2023-04-01 05:26:55,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:26:55,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 05:26:55,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:26:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 05:26:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:26:55,111 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 05:26:55,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:26:55,188 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2023-04-01 05:26:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:26:55,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2023-04-01 05:26:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:26:55,191 INFO L225 Difference]: With dead ends: 32 [2023-04-01 05:26:55,191 INFO L226 Difference]: Without dead ends: 30 [2023-04-01 05:26:55,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:26:55,192 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:26:55,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 62 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:26:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-01 05:26:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-04-01 05:26:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 05:26:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-04-01 05:26:55,200 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2023-04-01 05:26:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:26:55,200 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-04-01 05:26:55,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 05:26:55,200 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-04-01 05:26:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 05:26:55,201 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:26:55,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:26:55,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 05:26:55,405 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 05:26:55,406 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:26:55,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:26:55,406 INFO L85 PathProgramCache]: Analyzing trace with hash -353290452, now seen corresponding path program 1 times [2023-04-01 05:26:55,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:26:55,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540178656] [2023-04-01 05:26:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:55,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:26:55,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:26:55,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099379393] [2023-04-01 05:26:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:55,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:26:55,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:26:55,429 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 05:26:55,442 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 05:26:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:26:55,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 05:26:55,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:26:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 05:26:55,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:26:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:26:55,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:26:55,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540178656] [2023-04-01 05:26:55,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:26:55,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099379393] [2023-04-01 05:26:55,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099379393] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:26:55,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5731371] [2023-04-01 05:26:55,701 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:26:55,701 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:26:55,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:26:55,707 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:26:55,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:26:55,768 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-01 05:26:56,041 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2023-04-01 05:26:56,046 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-04-01 05:26:56,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-01 05:26:56,053 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:26:56,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [5731371] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:26:56,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:26:56,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11, 7] total 28 [2023-04-01 05:26:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372026824] [2023-04-01 05:26:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:26:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 05:26:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:26:56,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 05:26:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2023-04-01 05:26:56,520 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 05:26:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:26:57,021 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2023-04-01 05:26:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 05:26:57,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2023-04-01 05:26:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:26:57,024 INFO L225 Difference]: With dead ends: 36 [2023-04-01 05:26:57,024 INFO L226 Difference]: Without dead ends: 29 [2023-04-01 05:26:57,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2023-04-01 05:26:57,028 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:26:57,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 15 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:26:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-01 05:26:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-04-01 05:26:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 05:26:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-04-01 05:26:57,034 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2023-04-01 05:26:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:26:57,035 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-04-01 05:26:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 05:26:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-04-01 05:26:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 05:26:57,035 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:26:57,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:26:57,040 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 05:26:57,236 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 05:26:57,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:26:57,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:26:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1507720734, now seen corresponding path program 1 times [2023-04-01 05:26:57,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:26:57,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983545807] [2023-04-01 05:26:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:26:57,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:26:57,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894926279] [2023-04-01 05:26:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:57,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:26:57,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:26:57,255 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 05:26:57,283 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 05:26:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:26:57,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 05:26:57,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:26:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:26:57,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:26:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:26:57,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:26:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983545807] [2023-04-01 05:26:57,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:26:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894926279] [2023-04-01 05:26:57,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894926279] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:26:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1584821102] [2023-04-01 05:26:57,361 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:26:57,362 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:26:57,362 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:26:57,362 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:26:57,362 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:26:57,395 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-01 05:26:58,064 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2023-04-01 05:26:58,080 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-04-01 05:26:58,082 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-01 05:26:58,085 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:26:58,815 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '889#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (or (and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= ~counter~0 2147483648) (= |#NULL.offset| 0) (= |#NULL.base| 0)) (and (<= 1 |#StackHeapBarrier|) (<= 6 ~counter~0) (<= ~counter~0 2147483649) (= |#NULL.offset| 0) (= |#NULL.base| 0))))' at error location [2023-04-01 05:26:58,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:26:58,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:26:58,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-04-01 05:26:58,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696817724] [2023-04-01 05:26:58,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:26:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 05:26:58,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:26:58,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 05:26:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-04-01 05:26:58,817 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 05:26:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:26:58,870 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2023-04-01 05:26:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 05:26:58,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 26 [2023-04-01 05:26:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:26:58,871 INFO L225 Difference]: With dead ends: 60 [2023-04-01 05:26:58,871 INFO L226 Difference]: Without dead ends: 53 [2023-04-01 05:26:58,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2023-04-01 05:26:58,872 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:26:58,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 68 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:26:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-04-01 05:26:58,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2023-04-01 05:26:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 05:26:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-04-01 05:26:58,880 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 26 [2023-04-01 05:26:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:26:58,880 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-04-01 05:26:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 05:26:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-04-01 05:26:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 05:26:58,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:26:58,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:26:58,887 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 05:26:59,085 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 05:26:59,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:26:59,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:26:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1509508194, now seen corresponding path program 1 times [2023-04-01 05:26:59,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:26:59,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305039449] [2023-04-01 05:26:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:59,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:26:59,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:26:59,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954615331] [2023-04-01 05:26:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:26:59,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:26:59,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:26:59,096 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 05:26:59,098 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 05:26:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:26:59,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 05:26:59,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:26:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 05:26:59,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:26:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:26:59,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:26:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305039449] [2023-04-01 05:26:59,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:26:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954615331] [2023-04-01 05:26:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954615331] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:26:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1600206008] [2023-04-01 05:26:59,364 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-04-01 05:26:59,364 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:26:59,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:26:59,364 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:26:59,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:26:59,379 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-01 05:26:59,944 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-04-01 05:26:59,985 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-04-01 05:26:59,986 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-01 05:26:59,989 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:27:00,776 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1233#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (<= ~counter~0 2147483648) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 05:27:00,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:27:00,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:27:00,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 13 [2023-04-01 05:27:00,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338808457] [2023-04-01 05:27:00,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:27:00,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 05:27:00,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:27:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 05:27:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2023-04-01 05:27:00,778 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 05:27:00,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:27:00,898 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2023-04-01 05:27:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 05:27:00,898 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 26 [2023-04-01 05:27:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:27:00,899 INFO L225 Difference]: With dead ends: 63 [2023-04-01 05:27:00,899 INFO L226 Difference]: Without dead ends: 55 [2023-04-01 05:27:00,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2023-04-01 05:27:00,900 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:27:00,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 121 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:27:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-01 05:27:00,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2023-04-01 05:27:00,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 05:27:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2023-04-01 05:27:00,907 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 26 [2023-04-01 05:27:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:27:00,907 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2023-04-01 05:27:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 05:27:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2023-04-01 05:27:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-01 05:27:00,908 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:27:00,908 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:00,915 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 05:27:01,112 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 05:27:01,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:27:01,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:27:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash 538547119, now seen corresponding path program 1 times [2023-04-01 05:27:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:27:01,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571012563] [2023-04-01 05:27:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:01,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:27:01,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:27:01,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218298435] [2023-04-01 05:27:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:01,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:01,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:01,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:27:01,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 05:27:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:27:01,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 05:27:01,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:27:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 05:27:01,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:27:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 05:27:01,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:27:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571012563] [2023-04-01 05:27:01,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:27:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218298435] [2023-04-01 05:27:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218298435] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:27:01,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [293573519] [2023-04-01 05:27:01,335 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:27:01,335 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:27:01,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:27:01,335 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:27:01,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:27:01,349 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-01 05:27:01,907 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 19 for LOIs [2023-04-01 05:27:01,913 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-04-01 05:27:01,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-01 05:27:01,922 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:27:02,620 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1617#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (<= ~counter~0 2147483648) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 05:27:02,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:27:02,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:27:02,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2023-04-01 05:27:02,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062550317] [2023-04-01 05:27:02,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:27:02,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 05:27:02,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:27:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 05:27:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2023-04-01 05:27:02,622 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 05:27:02,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:27:02,749 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2023-04-01 05:27:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:27:02,749 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 32 [2023-04-01 05:27:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:27:02,750 INFO L225 Difference]: With dead ends: 55 [2023-04-01 05:27:02,750 INFO L226 Difference]: Without dead ends: 49 [2023-04-01 05:27:02,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 05:27:02,751 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:27:02,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 93 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:27:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-01 05:27:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-04-01 05:27:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 05:27:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2023-04-01 05:27:02,758 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 32 [2023-04-01 05:27:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:27:02,758 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2023-04-01 05:27:02,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 05:27:02,758 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2023-04-01 05:27:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-04-01 05:27:02,759 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:27:02,759 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:02,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 05:27:02,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:02,965 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:27:02,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:27:02,965 INFO L85 PathProgramCache]: Analyzing trace with hash -548963225, now seen corresponding path program 2 times [2023-04-01 05:27:02,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:27:02,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056228569] [2023-04-01 05:27:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:02,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:27:02,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:27:02,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352263312] [2023-04-01 05:27:02,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 05:27:02,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:02,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:02,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:27:02,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 05:27:03,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-04-01 05:27:03,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 05:27:03,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 05:27:03,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:27:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:27:03,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:27:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-01 05:27:03,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:27:03,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056228569] [2023-04-01 05:27:03,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:27:03,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352263312] [2023-04-01 05:27:03,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352263312] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:27:03,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [370793730] [2023-04-01 05:27:03,142 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:27:03,142 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:27:03,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:27:03,143 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:27:03,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:27:03,156 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-01 05:27:03,637 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2023-04-01 05:27:03,650 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-04-01 05:27:03,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-01 05:27:03,654 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:27:04,314 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2096#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (or (and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= ~counter~0 2147483648) (= |#NULL.offset| 0) (= |#NULL.base| 0)) (and (<= 1 |#StackHeapBarrier|) (<= 6 ~counter~0) (<= ~counter~0 2147483649) (= |#NULL.offset| 0) (= |#NULL.base| 0))))' at error location [2023-04-01 05:27:04,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:27:04,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:27:04,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-04-01 05:27:04,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884546494] [2023-04-01 05:27:04,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:27:04,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 05:27:04,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:27:04,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 05:27:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-04-01 05:27:04,316 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 05:27:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:27:04,389 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2023-04-01 05:27:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:27:04,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 50 [2023-04-01 05:27:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:27:04,415 INFO L225 Difference]: With dead ends: 62 [2023-04-01 05:27:04,415 INFO L226 Difference]: Without dead ends: 57 [2023-04-01 05:27:04,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 120 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-04-01 05:27:04,416 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:27:04,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:27:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-01 05:27:04,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-04-01 05:27:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 05:27:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2023-04-01 05:27:04,423 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2023-04-01 05:27:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:27:04,423 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2023-04-01 05:27:04,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 05:27:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2023-04-01 05:27:04,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-01 05:27:04,424 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:27:04,424 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:04,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 05:27:04,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-01 05:27:04,629 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:27:04,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:27:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash -386897110, now seen corresponding path program 3 times [2023-04-01 05:27:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:27:04,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626364715] [2023-04-01 05:27:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:27:04,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:27:04,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482039531] [2023-04-01 05:27:04,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 05:27:04,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:04,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:04,641 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:27:04,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 05:27:04,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 05:27:04,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-04-01 05:27:04,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 05:27:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 05:27:04,747 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 05:27:04,747 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 05:27:04,748 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:27:04,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 05:27:04,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:04,970 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:04,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:27:04,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:27:04 BoogieIcfgContainer [2023-04-01 05:27:04,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:27:04,995 INFO L158 Benchmark]: Toolchain (without parser) took 11413.43ms. Allocated memory was 270.5MB in the beginning and 390.1MB in the end (delta: 119.5MB). Free memory was 232.4MB in the beginning and 208.1MB in the end (delta: 24.3MB). Peak memory consumption was 144.4MB. Max. memory is 8.0GB. [2023-04-01 05:27:04,995 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 195.0MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:27:04,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.77ms. Allocated memory is still 270.5MB. Free memory was 231.9MB in the beginning and 221.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 05:27:04,995 INFO L158 Benchmark]: Boogie Preprocessor took 19.39ms. Allocated memory is still 270.5MB. Free memory was 221.9MB in the beginning and 220.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 05:27:04,996 INFO L158 Benchmark]: RCFGBuilder took 219.06ms. Allocated memory is still 270.5MB. Free memory was 220.3MB in the beginning and 207.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-01 05:27:04,996 INFO L158 Benchmark]: TraceAbstraction took 11001.88ms. Allocated memory was 270.5MB in the beginning and 390.1MB in the end (delta: 119.5MB). Free memory was 206.7MB in the beginning and 208.1MB in the end (delta: -1.4MB). Peak memory consumption was 119.2MB. Max. memory is 8.0GB. [2023-04-01 05:27:04,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 195.0MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.77ms. Allocated memory is still 270.5MB. Free memory was 231.9MB in the beginning and 221.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.39ms. Allocated memory is still 270.5MB. Free memory was 221.9MB in the beginning and 220.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 219.06ms. Allocated memory is still 270.5MB. Free memory was 220.3MB in the beginning and 207.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 11001.88ms. Allocated memory was 270.5MB in the beginning and 390.1MB in the end (delta: 119.5MB). Free memory was 206.7MB in the beginning and 208.1MB in the end (delta: -1.4MB). Peak memory consumption was 119.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) [L29] RET assume_abort_if_not(x1 >= 0) VAL [\old(counter)=0, counter=0, x1=6, x2=2] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) [L30] RET assume_abort_if_not(x2 != 0) VAL [\old(counter)=0, counter=0, x1=6, x2=2] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [\old(counter)=0, counter=0, x1=6, x2=2, y1=0, y2=0, y3=6] [L36] EXPR counter++ VAL [\old(counter)=0, counter++=0, counter=1, x1=6, x2=2, y1=0, y2=0, y3=6] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=1, x1=6, x2=2, y1=0, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [\old(counter)=0, counter=1, x1=6, x2=2, y1=0, y2=1, y3=5] [L36] EXPR counter++ VAL [\old(counter)=0, counter++=1, counter=2, x1=6, x2=2, y1=0, y2=1, y3=5] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=2, x1=6, x2=2, y1=0, y2=1, y3=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=2, x1=6, x2=2, y1=1, y2=0, y3=4] [L36] EXPR counter++ VAL [\old(counter)=0, counter++=2, counter=3, x1=6, x2=2, y1=1, y2=0, y3=4] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=3, x1=6, x2=2, y1=1, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [\old(counter)=0, counter=3, x1=6, x2=2, y1=1, y2=1, y3=3] [L36] EXPR counter++ VAL [\old(counter)=0, counter++=3, counter=4, x1=6, x2=2, y1=1, y2=1, y3=3] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=4, x1=6, x2=2, y1=1, y2=1, y3=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=4, x1=6, x2=2, y1=2, y2=0, y3=2] [L36] EXPR counter++ VAL [\old(counter)=0, counter++=4, counter=5, x1=6, x2=2, y1=2, y2=0, y3=2] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=5, x1=6, x2=2, y1=2, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [\old(counter)=0, counter=5, x1=6, x2=2, y1=2, y2=1, y3=1] [L36] EXPR counter++ VAL [\old(counter)=0, counter++=5, counter=6, x1=6, x2=2, y1=2, y2=1, y3=1] [L36] COND FALSE !(counter++<5) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, \old(counter)=0, counter=6] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 498 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 362 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 581 IncrementalHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 136 mSDtfsCounter, 581 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 542 GetRequests, 378 SyntacticMatches, 13 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=8, InterpolantAutomatonStates: 74, 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, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 1175 SizeOfPredicates, 21 NumberOfNonLiveVariables, 834 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 93/200 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: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 16, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 14, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 38, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 60, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 12, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 169, DAG_COMPRESSION_RETAINED_NODES: 68, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-01 05:27:05,012 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...