/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/hard-u_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:22:16,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:22:16,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:22:16,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:22:16,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:22:16,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:22:16,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:22:16,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:22:16,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:22:16,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:22:16,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:22:16,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:22:16,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:22:16,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:22:16,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:22:16,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:22:16,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:22:16,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:22:17,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:22:17,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:22:17,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:22:17,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:22:17,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:22:17,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:22:17,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 05:22:17,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:22:17,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:22:17,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:22:17,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:22:17,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:22:17,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:22:17,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:22:17,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:22:17,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:22:17,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:22:17,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:22:17,028 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 05:22:17,059 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:22:17,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:22:17,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:22:17,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:22:17,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:22:17,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:22:17,061 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:22:17,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:22:17,062 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:22:17,062 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:22:17,062 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:22:17,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:22:17,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:22:17,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:22:17,063 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:22:17,063 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:22:17,063 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:22:17,063 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:22:17,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:22:17,064 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:22:17,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:22:17,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:22:17,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:22:17,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:22:17,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:22:17,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:22:17,065 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:22:17,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:22:17,065 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:22:17,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:22:17,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:22:17,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:22:17,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:22:17,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:22:17,066 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:22:17,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:22:17,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:22:17,066 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:22:17,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:22:17,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:22:17,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:22:17,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:22:17,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:22:17,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:22:17,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:22:17,315 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:22:17,315 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:22:17,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound100.c [2023-04-01 05:22:18,455 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:22:18,655 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:22:18,655 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound100.c [2023-04-01 05:22:18,661 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae42b1c9/a00a35ef593b49a08382e2ecfcd6b884/FLAG04cb4c8a0 [2023-04-01 05:22:18,675 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae42b1c9/a00a35ef593b49a08382e2ecfcd6b884 [2023-04-01 05:22:18,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:22:18,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:22:18,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:22:18,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:22:18,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:22:18,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1ad0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18, skipping insertion in model container [2023-04-01 05:22:18,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:22:18,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:22:18,835 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/hard-u_valuebound100.c[537,550] [2023-04-01 05:22:18,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:22:18,863 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:22:18,875 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/hard-u_valuebound100.c[537,550] [2023-04-01 05:22:18,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:22:18,894 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:22:18,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18 WrapperNode [2023-04-01 05:22:18,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:22:18,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:22:18,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:22:18,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:22:18,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,919 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:22:18,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:22:18,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:22:18,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:22:18,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (1/1) ... [2023-04-01 05:22:18,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:22:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:22:18,948 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 05:22:18,949 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 05:22:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:22:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:22:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:22:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 05:22:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:22:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:22:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:22:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:22:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:22:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:22:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 05:22:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 05:22:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:22:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:22:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:22:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:22:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:22:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:22:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:22:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:22:19,042 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:22:19,044 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:22:19,208 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:22:19,251 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:22:19,251 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-01 05:22:19,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:22:19 BoogieIcfgContainer [2023-04-01 05:22:19,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:22:19,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:22:19,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:22:19,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:22:19,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:22:18" (1/3) ... [2023-04-01 05:22:19,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593b888f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:22:19, skipping insertion in model container [2023-04-01 05:22:19,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:22:18" (2/3) ... [2023-04-01 05:22:19,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593b888f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:22:19, skipping insertion in model container [2023-04-01 05:22:19,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:22:19" (3/3) ... [2023-04-01 05:22:19,261 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound100.c [2023-04-01 05:22:19,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:22:19,276 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:22:19,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:22:19,320 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;@2f66f843, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:22:19,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:22:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 05:22:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-01 05:22:19,329 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:22:19,329 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:22:19,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:22:19,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:22:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash -91855496, now seen corresponding path program 1 times [2023-04-01 05:22:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:22:19,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148898747] [2023-04-01 05:22:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:19,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:22:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:22:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 05:22:19,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:22:19,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148898747] [2023-04-01 05:22:19,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148898747] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:22:19,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:22:19,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:22:19,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224557706] [2023-04-01 05:22:19,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:22:19,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:22:19,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:22:19,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:22:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:22:19,970 INFO L87 Difference]: Start difference. First operand has 33 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 05:22:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:22:20,088 INFO L93 Difference]: Finished difference Result 66 states and 105 transitions. [2023-04-01 05:22:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:22:20,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2023-04-01 05:22:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:22:20,097 INFO L225 Difference]: With dead ends: 66 [2023-04-01 05:22:20,098 INFO L226 Difference]: Without dead ends: 39 [2023-04-01 05:22:20,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:22:20,107 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:22:20,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 119 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:22:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-04-01 05:22:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2023-04-01 05:22:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 05:22:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-04-01 05:22:20,139 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 21 [2023-04-01 05:22:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:22:20,139 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-04-01 05:22:20,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 05:22:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-04-01 05:22:20,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 05:22:20,141 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:22:20,141 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:22:20,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:22:20,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:22:20,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:22:20,143 INFO L85 PathProgramCache]: Analyzing trace with hash -445599122, now seen corresponding path program 1 times [2023-04-01 05:22:20,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:22:20,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561240727] [2023-04-01 05:22:20,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:20,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:22:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:22:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 05:22:20,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:22:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561240727] [2023-04-01 05:22:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561240727] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:22:20,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:22:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:22:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463425399] [2023-04-01 05:22:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:22:20,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:22:20,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:22:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:22:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:22:20,496 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 05:22:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:22:20,576 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-04-01 05:22:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:22:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2023-04-01 05:22:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:22:20,579 INFO L225 Difference]: With dead ends: 45 [2023-04-01 05:22:20,579 INFO L226 Difference]: Without dead ends: 43 [2023-04-01 05:22:20,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:22:20,588 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:22:20,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:22:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-04-01 05:22:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2023-04-01 05:22:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 05:22:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-04-01 05:22:20,596 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 26 [2023-04-01 05:22:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:22:20,596 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-04-01 05:22:20,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 05:22:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-04-01 05:22:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-01 05:22:20,600 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:22:20,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:22:20,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:22:20,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:22:20,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:22:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1862588680, now seen corresponding path program 1 times [2023-04-01 05:22:20,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:22:20,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095663141] [2023-04-01 05:22:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:22:20,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:22:20,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042882255] [2023-04-01 05:22:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:20,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:22:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:22:20,637 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 05:22:20,665 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 05:22:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:22:20,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-01 05:22:20,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:22:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 05:22:20,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:22:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 05:22:21,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:22:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095663141] [2023-04-01 05:22:21,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:22:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042882255] [2023-04-01 05:22:21,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042882255] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:22:21,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1296823752] [2023-04-01 05:22:21,207 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-01 05:22:21,208 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:22:21,213 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:22:21,217 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:22:21,218 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:22:21,300 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:22:21,552 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-01 05:22:21,557 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2023-04-01 05:22:21,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:22:21,566 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:22:21,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1296823752] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:22:21,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:22:21,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 7] total 22 [2023-04-01 05:22:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004729840] [2023-04-01 05:22:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:22:21,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 05:22:21,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:22:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 05:22:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-04-01 05:22:21,783 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 05:22:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:22:22,508 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2023-04-01 05:22:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 05:22:22,509 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 31 [2023-04-01 05:22:22,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:22:22,511 INFO L225 Difference]: With dead ends: 72 [2023-04-01 05:22:22,512 INFO L226 Difference]: Without dead ends: 54 [2023-04-01 05:22:22,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2023-04-01 05:22:22,515 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 66 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:22:22,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 6 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 05:22:22,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-04-01 05:22:22,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-04-01 05:22:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-01 05:22:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2023-04-01 05:22:22,544 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 31 [2023-04-01 05:22:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:22:22,544 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2023-04-01 05:22:22,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 05:22:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2023-04-01 05:22:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 05:22:22,548 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:22:22,548 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:22:22,557 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 05:22:22,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:22:22,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:22:22,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:22:22,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1036351980, now seen corresponding path program 1 times [2023-04-01 05:22:22,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:22:22,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700631222] [2023-04-01 05:22:22,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:22,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:22:22,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:22:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220725181] [2023-04-01 05:22:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:22,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:22:22,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:22:22,776 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 05:22:22,779 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 05:22:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:22:22,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2023-04-01 05:22:22,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:22:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-04-01 05:22:22,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:22:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-04-01 05:22:23,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:22:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700631222] [2023-04-01 05:22:23,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:22:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220725181] [2023-04-01 05:22:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220725181] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:22:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [200349124] [2023-04-01 05:22:23,156 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-04-01 05:22:23,156 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:22:23,158 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:22:23,168 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:22:23,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:22:23,194 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:22:23,693 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:22:23,697 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2023-04-01 05:22:23,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:22:23,704 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:22:23,882 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1036#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:22:23,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:22:23,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:22:23,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-04-01 05:22:23,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74558106] [2023-04-01 05:22:23,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:22:23,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 05:22:23,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:22:23,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 05:22:23,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-04-01 05:22:23,885 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 05:22:26,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-01 05:22:28,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-01 05:22:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:22:28,451 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2023-04-01 05:22:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 05:22:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 48 [2023-04-01 05:22:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:22:28,455 INFO L225 Difference]: With dead ends: 81 [2023-04-01 05:22:28,455 INFO L226 Difference]: Without dead ends: 73 [2023-04-01 05:22:28,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-04-01 05:22:28,456 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 05:22:28,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 163 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 241 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 05:22:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-04-01 05:22:28,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2023-04-01 05:22:28,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.105263157894737) internal successors, (42), 40 states have internal predecessors, (42), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-01 05:22:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2023-04-01 05:22:28,482 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 48 [2023-04-01 05:22:28,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:22:28,483 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2023-04-01 05:22:28,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 05:22:28,483 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2023-04-01 05:22:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-01 05:22:28,484 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:22:28,484 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:22:28,496 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 05:22:28,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 05:22:28,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:22:28,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:22:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash -860679289, now seen corresponding path program 1 times [2023-04-01 05:22:28,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:22:28,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125699319] [2023-04-01 05:22:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:22:28,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:22:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482372834] [2023-04-01 05:22:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:28,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:22:28,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:22:28,707 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 05:22:28,710 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 05:22:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:22:28,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 05:22:28,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:22:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-04-01 05:22:28,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:22:28,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:22:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125699319] [2023-04-01 05:22:28,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:22:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482372834] [2023-04-01 05:22:28,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482372834] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:22:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1739567232] [2023-04-01 05:22:28,980 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-01 05:22:28,980 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:22:28,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:22:28,980 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:22:28,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:22:28,997 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:22:29,355 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:22:29,358 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2023-04-01 05:22:29,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:22:29,364 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:22:29,581 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1474#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:22:29,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:22:29,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:22:29,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-01 05:22:29,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417504341] [2023-04-01 05:22:29,582 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-01 05:22:29,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 05:22:29,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:22:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 05:22:29,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-04-01 05:22:29,583 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 05:22:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:22:30,433 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2023-04-01 05:22:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:22:30,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 55 [2023-04-01 05:22:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:22:30,435 INFO L225 Difference]: With dead ends: 79 [2023-04-01 05:22:30,435 INFO L226 Difference]: Without dead ends: 77 [2023-04-01 05:22:30,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-04-01 05:22:30,436 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 05:22:30,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 120 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 05:22:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-04-01 05:22:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2023-04-01 05:22:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-01 05:22:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2023-04-01 05:22:30,463 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 55 [2023-04-01 05:22:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:22:30,464 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2023-04-01 05:22:30,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 05:22:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2023-04-01 05:22:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 05:22:30,466 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:22:30,466 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:22:30,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 05:22:30,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:22:30,667 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:22:30,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:22:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1143149830, now seen corresponding path program 1 times [2023-04-01 05:22:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:22:30,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308975614] [2023-04-01 05:22:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:22:30,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:22:30,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370640718] [2023-04-01 05:22:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:22:30,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:22:30,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:22:30,678 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 05:22:30,680 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 05:22:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:22:31,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 46 conjunts are in the unsatisfiable core [2023-04-01 05:22:31,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:22:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-04-01 05:22:32,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:23:06,561 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse11 (mod c_main_~d~0 4294967296)) (.cse10 (mod c_main_~p~0 4294967296))) (or (let ((.cse2 (mod c_main_~A~0 4294967296)) (.cse8 (div .cse11 2))) (let ((.cse1 (mod c_main_~r~0 4294967296)) (.cse0 (mod .cse8 4294967296)) (.cse5 (* (- 1) .cse2)) (.cse7 (* c_main_~q~0 c_main_~B~0))) (and (or (<= .cse0 .cse1) (let ((.cse6 (mod .cse7 4294967296))) (let ((.cse4 (+ .cse6 c_main_~r~0)) (.cse3 (* (div c_main_~r~0 4294967296) 4294967296))) (and (or (< (+ .cse2 4294967295 .cse3) .cse4) (< (+ 4294967295 (* 4294967296 (div (+ (- 1) .cse5 .cse6 c_main_~r~0) 4294967296))) c_main_~r~0)) (< .cse4 (+ .cse2 4294967297 .cse3)) (< (+ .cse2 .cse3) (+ .cse6 c_main_~r~0 1)))))) (or (< .cse1 .cse0) (let ((.cse9 (mod (+ .cse7 (* c_main_~B~0 (div .cse10 2))) 4294967296))) (< (+ .cse2 4294967295 .cse8 (* (div (+ (- 1) (* (- 1) .cse8) .cse5 c_main_~r~0 .cse9) 4294967296) 4294967296)) (+ c_main_~r~0 .cse9))))))) (not (= (mod (* c_main_~p~0 c_main_~B~0) 4294967296) .cse11)) (= .cse10 1))) is different from true