/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/ps5-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:29:21,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:29:21,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:29:21,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:29:21,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:29:21,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:29:21,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:29:21,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:29:21,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:29:21,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:29:21,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:29:21,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:29:21,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:29:21,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:29:21,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:29:21,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:29:21,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:29:21,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:29:21,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:29:21,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:29:21,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:29:21,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:29:21,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:29:21,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:29:21,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 23:29:21,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:29:21,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:29:21,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:29:21,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:29:21,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:29:21,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:29:21,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:29:21,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:29:21,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:29:21,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:29:21,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:29:21,915 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 [2023-04-02 23:29:21,937 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:29:21,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:29:21,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:29:21,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:29:21,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:29:21,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:29:21,938 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:29:21,938 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:29:21,938 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:29:21,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:29:21,939 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:29:21,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:29:21,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:29:21,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:29:21,939 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:29:21,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:29:21,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:29:21,940 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:29:21,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:29:21,940 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:29:21,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:29:21,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:29:21,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:29:21,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:29:21,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:29:21,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:29:21,941 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:29:21,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:29:21,941 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:29:21,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:29:21,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:29:21,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:29:21,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:29:21,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:29:22,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:29:22,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:29:22,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:29:22,169 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:29:22,171 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:29:22,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2023-04-02 23:29:23,291 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:29:23,414 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:29:23,414 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2023-04-02 23:29:23,418 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ea87f71/f69bb69ad41c442693a80e2323a281b5/FLAGc4647d4d9 [2023-04-02 23:29:23,428 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ea87f71/f69bb69ad41c442693a80e2323a281b5 [2023-04-02 23:29:23,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:29:23,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:29:23,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:29:23,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:29:23,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:29:23,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3238528a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23, skipping insertion in model container [2023-04-02 23:29:23,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:29:23,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:29:23,556 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/ps5-ll_valuebound100.c[458,471] [2023-04-02 23:29:23,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:29:23,578 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:29:23,587 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/ps5-ll_valuebound100.c[458,471] [2023-04-02 23:29:23,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:29:23,607 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:29:23,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23 WrapperNode [2023-04-02 23:29:23,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:29:23,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:29:23,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:29:23,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:29:23,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:29:23,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:29:23,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:29:23,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:29:23,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (1/1) ... [2023-04-02 23:29:23,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:29:23,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:29:23,662 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) [2023-04-02 23:29:23,692 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 [2023-04-02 23:29:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:29:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:29:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:29:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 23:29:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 23:29:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:29:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:29:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:29:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:29:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:29:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-02 23:29:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 23:29:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 23:29:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:29:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:29:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:29:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:29:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:29:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:29:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:29:23,750 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:29:23,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:29:23,831 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:29:23,865 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:29:23,866 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 23:29:23,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:29:23 BoogieIcfgContainer [2023-04-02 23:29:23,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:29:23,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:29:23,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:29:23,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:29:23,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:29:23" (1/3) ... [2023-04-02 23:29:23,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608ee73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:29:23, skipping insertion in model container [2023-04-02 23:29:23,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:23" (2/3) ... [2023-04-02 23:29:23,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608ee73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:29:23, skipping insertion in model container [2023-04-02 23:29:23,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:29:23" (3/3) ... [2023-04-02 23:29:23,872 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound100.c [2023-04-02 23:29:23,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:29:23,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:29:23,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:29:23,915 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;@51fc3742, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:29:23,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:29:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 23:29:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 23:29:23,923 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:29:23,924 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:29:23,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:29:23,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:29:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash 395619074, now seen corresponding path program 1 times [2023-04-02 23:29:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:29:23,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064598640] [2023-04-02 23:29:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:23,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:29:24,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:29:24,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062373820] [2023-04-02 23:29:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:24,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:29:24,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:29:24,049 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) [2023-04-02 23:29:24,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:29:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:29:24,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 23:29:24,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:29:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:29:24,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:29:24,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:29:24,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064598640] [2023-04-02 23:29:24,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:29:24,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062373820] [2023-04-02 23:29:24,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062373820] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:29:24,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:29:24,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:29:24,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475806212] [2023-04-02 23:29:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:29:24,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:29:24,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:29:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:29:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:29:24,265 INFO L87 Difference]: Start difference. First operand has 25 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 23:29:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:29:24,351 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-04-02 23:29:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:29:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-04-02 23:29:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:29:24,358 INFO L225 Difference]: With dead ends: 51 [2023-04-02 23:29:24,358 INFO L226 Difference]: Without dead ends: 28 [2023-04-02 23:29:24,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:29:24,365 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:29:24,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:29:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-02 23:29:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-04-02 23:29:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:29:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-04-02 23:29:24,391 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2023-04-02 23:29:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:29:24,392 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-04-02 23:29:24,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 23:29:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-04-02 23:29:24,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 23:29:24,393 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:29:24,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:29:24,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 23:29:24,597 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 [2023-04-02 23:29:24,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:29:24,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:29:24,599 INFO L85 PathProgramCache]: Analyzing trace with hash 398349892, now seen corresponding path program 1 times [2023-04-02 23:29:24,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:29:24,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94342011] [2023-04-02 23:29:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:24,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:29:24,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:29:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532081449] [2023-04-02 23:29:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:24,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:29:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:29:24,613 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) [2023-04-02 23:29:24,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:29:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:29:24,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 23:29:24,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:29:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:29:24,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:29:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:29:24,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:29:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94342011] [2023-04-02 23:29:24,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:29:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532081449] [2023-04-02 23:29:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532081449] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:29:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1173324275] [2023-04-02 23:29:24,858 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-02 23:29:24,858 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:29:24,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:29:24,865 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:29:24,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:29:24,918 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:29:25,294 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 65 for LOIs [2023-04-02 23:29:25,385 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:29:25,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:29:25,392 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:29:25,909 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352#(and (exists ((v_main_~c~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_13 Int) (v_main_~y~0_BEFORE_CALL_13 Int) (v_main_~x~0_BEFORE_CALL_13 Int)) (and (not (= (+ (* 30 v_main_~x~0_BEFORE_CALL_13) v_main_~y~0_BEFORE_CALL_13) (+ (* 6 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)) (* 15 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)) (* (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13) 10)))) (or (and (<= 1 |#StackHeapBarrier|) (= v_main_~y~0_BEFORE_CALL_13 0) (= v_main_~c~0_BEFORE_CALL_9 0) (= v_main_~x~0_BEFORE_CALL_13 0) (<= v_main_~k~0_BEFORE_CALL_13 100) (<= 0 v_main_~k~0_BEFORE_CALL_13) (= |#NULL.offset| 0) (= |#NULL.base| 0)) (and (<= v_main_~y~0_BEFORE_CALL_13 (+ |#StackHeapBarrier| 100)) (= v_main_~c~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_13) (<= 1 |#StackHeapBarrier|) (<= 1 (+ |#StackHeapBarrier| v_main_~k~0_BEFORE_CALL_13)) (<= v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~y~0_BEFORE_CALL_13 101) (<= (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13) 201) (<= 1 v_main_~y~0_BEFORE_CALL_13) (<= v_main_~k~0_BEFORE_CALL_13 (+ v_main_~y~0_BEFORE_CALL_13 99)) (<= v_main_~k~0_BEFORE_CALL_13 100) (<= 0 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~k~0_BEFORE_CALL_13 (+ |#StackHeapBarrier| 99)) (<= 2 (+ v_main_~y~0_BEFORE_CALL_13 |#StackHeapBarrier|)) (= |#NULL.offset| 0) (<= 1 (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13)) (= |#NULL.base| 0))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:29:25,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:29:25,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:29:25,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-04-02 23:29:25,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424185131] [2023-04-02 23:29:25,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:29:25,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 23:29:25,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:29:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 23:29:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-04-02 23:29:25,911 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 23:29:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:29:26,014 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-04-02 23:29:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:29:26,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-04-02 23:29:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:29:26,015 INFO L225 Difference]: With dead ends: 39 [2023-04-02 23:29:26,016 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 23:29:26,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-04-02 23:29:26,017 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:29:26,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 90 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:29:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 23:29:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-04-02 23:29:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:29:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-04-02 23:29:26,024 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2023-04-02 23:29:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:29:26,025 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-04-02 23:29:26,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 23:29:26,025 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-04-02 23:29:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-02 23:29:26,026 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:29:26,026 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:29:26,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 23:29:26,230 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 [2023-04-02 23:29:26,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:29:26,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:29:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2024645172, now seen corresponding path program 1 times [2023-04-02 23:29:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:29:26,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533135259] [2023-04-02 23:29:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:29:26,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:29:26,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550576237] [2023-04-02 23:29:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:26,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:29:26,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:29:26,266 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) [2023-04-02 23:29:26,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 23:29:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:29:26,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 23:29:26,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:29:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 23:29:26,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:29:30,478 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 23:29:50,571 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_19 Int) (v_main_~y~0_BEFORE_CALL_18 Int)) (or (= (* v_main_~y~0_BEFORE_CALL_18 v_main_~k~0_BEFORE_CALL_19) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18)) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 10) (* 29 v_main_~y~0_BEFORE_CALL_18) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 6) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 15)) 30) 0)))) is different from true [2023-04-02 23:30:08,702 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0) (forall ((v_main_~k~0_BEFORE_CALL_19 Int) (v_main_~y~0_BEFORE_CALL_18 Int)) (or (= (* v_main_~y~0_BEFORE_CALL_18 v_main_~k~0_BEFORE_CALL_19) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18)) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 10) (* 29 v_main_~y~0_BEFORE_CALL_18) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 6) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 15)) 30) 0)))) is different from true [2023-04-02 23:30:12,723 WARN L839 $PredicateComparison]: unable to prove that (or (< c_main_~c~0 c_main_~k~0) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 23:30:20,768 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) (* c_main_~y~0 c_main_~y~0) 1))))) is different from false [2023-04-02 23:30:22,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:30:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533135259] [2023-04-02 23:30:22,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:30:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550576237] [2023-04-02 23:30:22,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550576237] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:30:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1870436548] [2023-04-02 23:30:22,791 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:30:22,791 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:30:22,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:30:22,792 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:30:22,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:30:22,804 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:30:23,002 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:30:23,005 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:30:23,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:30:23,011 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:30:23,255 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '645#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:30:23,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:30:23,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:30:23,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-02 23:30:23,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751174078] [2023-04-02 23:30:23,255 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:30:23,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:30:23,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:30:23,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:30:23,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=367, Unknown=5, NotChecked=210, Total=650 [2023-04-02 23:30:23,257 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 23:30:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:30:23,351 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-04-02 23:30:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:30:23,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2023-04-02 23:30:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:30:23,352 INFO L225 Difference]: With dead ends: 39 [2023-04-02 23:30:23,352 INFO L226 Difference]: Without dead ends: 33 [2023-04-02 23:30:23,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=81, Invalid=440, Unknown=5, NotChecked=230, Total=756 [2023-04-02 23:30:23,353 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:30:23,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:30:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-04-02 23:30:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-04-02 23:30:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 23:30:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-04-02 23:30:23,359 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 35 [2023-04-02 23:30:23,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:30:23,359 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-04-02 23:30:23,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 23:30:23,359 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-04-02 23:30:23,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 23:30:23,360 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:30:23,360 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:30:23,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 23:30:23,567 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 [2023-04-02 23:30:23,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:30:23,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:30:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash -170934026, now seen corresponding path program 2 times [2023-04-02 23:30:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:30:23,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786435492] [2023-04-02 23:30:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:30:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:30:23,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:30:23,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58847986] [2023-04-02 23:30:23,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:30:23,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:30:23,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:30:23,585 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) [2023-04-02 23:30:23,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 23:30:23,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 23:30:23,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:30:23,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 23:30:23,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:30:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 23:30:23,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:30:27,904 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) (* c_main_~y~0 c_main_~y~0) 1))))) is different from false [2023-04-02 23:30:27,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:30:27,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786435492] [2023-04-02 23:30:27,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:30:27,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58847986] [2023-04-02 23:30:27,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58847986] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:30:27,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [212558203] [2023-04-02 23:30:27,908 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:30:27,908 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:30:27,908 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:30:27,908 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:30:27,909 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:30:27,949 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:30:28,177 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:30:28,179 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:30:28,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:30:28,182 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:30:28,558 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '963#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:30:28,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:30:28,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:30:28,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-04-02 23:30:28,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283887694] [2023-04-02 23:30:28,559 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:30:28,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:30:28,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:30:28,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:30:28,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=517, Unknown=1, NotChecked=46, Total=650 [2023-04-02 23:30:28,560 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 23:30:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:30:28,670 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-04-02 23:30:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:30:28,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 42 [2023-04-02 23:30:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:30:28,672 INFO L225 Difference]: With dead ends: 42 [2023-04-02 23:30:28,672 INFO L226 Difference]: Without dead ends: 36 [2023-04-02 23:30:28,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=100, Invalid=605, Unknown=1, NotChecked=50, Total=756 [2023-04-02 23:30:28,673 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:30:28,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 105 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:30:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-04-02 23:30:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-04-02 23:30:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 23:30:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-04-02 23:30:28,678 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 42 [2023-04-02 23:30:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:30:28,679 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-04-02 23:30:28,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 23:30:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-04-02 23:30:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-02 23:30:28,680 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:30:28,680 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:30:28,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 23:30:28,884 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 [2023-04-02 23:30:28,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:30:28,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:30:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash -363600908, now seen corresponding path program 3 times [2023-04-02 23:30:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:30:28,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082170868] [2023-04-02 23:30:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:30:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:30:28,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:30:28,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136556056] [2023-04-02 23:30:28,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 23:30:28,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:30:28,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:30:28,895 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) [2023-04-02 23:30:28,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 23:30:28,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 23:30:28,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:30:28,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 23:30:28,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:30:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-04-02 23:30:29,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:30:29,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:30:29,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082170868] [2023-04-02 23:30:29,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:30:29,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136556056] [2023-04-02 23:30:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136556056] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:30:29,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1839339313] [2023-04-02 23:30:29,121 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:30:29,122 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:30:29,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:30:29,122 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:30:29,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:30:29,136 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:30:29,363 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:30:29,366 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:30:29,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:30:29,369 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:30:29,712 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1312#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:30:29,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:30:29,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:30:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-02 23:30:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310335253] [2023-04-02 23:30:29,712 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:30:29,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:30:29,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:30:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:30:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-04-02 23:30:29,713 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-04-02 23:30:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:30:29,811 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2023-04-02 23:30:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:30:29,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 49 [2023-04-02 23:30:29,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:30:29,812 INFO L225 Difference]: With dead ends: 45 [2023-04-02 23:30:29,812 INFO L226 Difference]: Without dead ends: 39 [2023-04-02 23:30:29,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2023-04-02 23:30:29,814 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:30:29,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 145 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:30:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-04-02 23:30:29,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-04-02 23:30:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 23:30:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2023-04-02 23:30:29,820 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 49 [2023-04-02 23:30:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:30:29,820 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2023-04-02 23:30:29,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-04-02 23:30:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2023-04-02 23:30:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 23:30:29,821 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:30:29,821 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:30:29,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 23:30:30,025 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 [2023-04-02 23:30:30,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:30:30,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:30:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1833957578, now seen corresponding path program 4 times [2023-04-02 23:30:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:30:30,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772316532] [2023-04-02 23:30:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:30:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:30:30,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:30:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820976336] [2023-04-02 23:30:30,036 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 23:30:30,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:30:30,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:30:30,037 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) [2023-04-02 23:30:30,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 23:30:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:30:30,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2023-04-02 23:30:30,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:30:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 26 proven. 31 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-04-02 23:30:30,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:30:34,337 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 23:30:54,375 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_91 Int) (v_main_~y~0_BEFORE_CALL_81 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 6) (* 29 v_main_~y~0_BEFORE_CALL_81) (* v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 15) (* v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 10)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81) (* v_main_~y~0_BEFORE_CALL_81 v_main_~k~0_BEFORE_CALL_91))))) is different from true [2023-04-02 23:31:12,406 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_91 Int) (v_main_~y~0_BEFORE_CALL_81 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 6) (* 29 v_main_~y~0_BEFORE_CALL_81) (* v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 15) (* v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81 10)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_81 v_main_~y~0_BEFORE_CALL_81) (* v_main_~y~0_BEFORE_CALL_81 v_main_~k~0_BEFORE_CALL_91)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-04-02 23:31:16,416 WARN L839 $PredicateComparison]: unable to prove that (or (< c_main_~c~0 c_main_~k~0) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 23:31:24,456 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) (* c_main_~y~0 c_main_~y~0) 1))))) is different from false [2023-04-02 23:31:26,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772316532] [2023-04-02 23:31:26,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:31:26,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820976336] [2023-04-02 23:31:26,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820976336] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:31:26,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [725081693] [2023-04-02 23:31:26,476 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:31:26,476 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:31:26,476 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:31:26,476 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:31:26,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:31:26,489 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:31:26,732 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:31:26,733 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:31:26,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:31:26,737 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:31:27,123 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1697#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:31:27,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:31:27,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:31:27,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-04-02 23:31:27,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735101935] [2023-04-02 23:31:27,124 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:31:27,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 23:31:27,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:27,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 23:31:27,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=533, Unknown=5, NotChecked=250, Total=870 [2023-04-02 23:31:27,125 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-04-02 23:31:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:31:27,273 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2023-04-02 23:31:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:31:27,282 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 56 [2023-04-02 23:31:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:31:27,284 INFO L225 Difference]: With dead ends: 48 [2023-04-02 23:31:27,284 INFO L226 Difference]: Without dead ends: 42 [2023-04-02 23:31:27,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 98 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=95, Invalid=622, Unknown=5, NotChecked=270, Total=992 [2023-04-02 23:31:27,286 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:31:27,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 166 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:31:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-04-02 23:31:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-04-02 23:31:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 23:31:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-04-02 23:31:27,297 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 56 [2023-04-02 23:31:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:31:27,297 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-04-02 23:31:27,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-04-02 23:31:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-04-02 23:31:27,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 23:31:27,301 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:27,301 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:27,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 23:31:27,502 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 [2023-04-02 23:31:27,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:27,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1677453900, now seen corresponding path program 5 times [2023-04-02 23:31:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502303192] [2023-04-02 23:31:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:27,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:31:27,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921348070] [2023-04-02 23:31:27,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:31:27,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:27,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:27,511 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) [2023-04-02 23:31:27,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 23:31:31,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-04-02 23:31:31,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:31:31,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 36 conjunts are in the unsatisfiable core [2023-04-02 23:31:31,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 58 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-04-02 23:31:31,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:31:31,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:31,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502303192] [2023-04-02 23:31:31,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:31:31,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921348070] [2023-04-02 23:31:31,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921348070] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:31:31,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1736416550] [2023-04-02 23:31:31,909 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:31:31,909 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:31:31,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:31:31,910 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:31:31,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:31:31,920 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:31:32,081 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:31:32,082 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:31:32,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:31:32,085 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:31:32,454 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2111#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:31:32,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:31:32,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:31:32,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-04-02 23:31:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480839337] [2023-04-02 23:31:32,454 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:31:32,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 23:31:32,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 23:31:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2023-04-02 23:31:32,455 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-04-02 23:31:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:31:32,646 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-04-02 23:31:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 23:31:32,646 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 63 [2023-04-02 23:31:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:31:32,647 INFO L225 Difference]: With dead ends: 51 [2023-04-02 23:31:32,647 INFO L226 Difference]: Without dead ends: 45 [2023-04-02 23:31:32,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2023-04-02 23:31:32,648 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:31:32,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 177 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:31:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-02 23:31:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-04-02 23:31:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 13 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 23:31:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2023-04-02 23:31:32,655 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 63 [2023-04-02 23:31:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:31:32,655 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2023-04-02 23:31:32,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-04-02 23:31:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2023-04-02 23:31:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 23:31:32,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:32,656 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:32,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 23:31:32,893 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 [2023-04-02 23:31:32,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:32,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1653056138, now seen corresponding path program 6 times [2023-04-02 23:31:32,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:32,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725864628] [2023-04-02 23:31:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:32,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:31:32,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323666635] [2023-04-02 23:31:32,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 23:31:32,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:32,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:32,904 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) [2023-04-02 23:31:32,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 23:31:32,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 23:31:32,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:31:32,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 35 conjunts are in the unsatisfiable core [2023-04-02 23:31:32,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-04-02 23:31:33,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:31:33,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725864628] [2023-04-02 23:31:33,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:31:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323666635] [2023-04-02 23:31:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323666635] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:31:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1950965267] [2023-04-02 23:31:33,175 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:31:33,175 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:31:33,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:31:33,176 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:31:33,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:31:33,188 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:31:33,381 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:31:33,383 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:31:33,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:31:33,386 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:31:33,850 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2555#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:31:33,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:31:33,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:31:33,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-04-02 23:31:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146972188] [2023-04-02 23:31:33,851 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:31:33,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 23:31:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:33,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 23:31:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2023-04-02 23:31:33,853 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-02 23:31:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:31:34,017 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2023-04-02 23:31:34,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:31:34,017 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 70 [2023-04-02 23:31:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:31:34,018 INFO L225 Difference]: With dead ends: 54 [2023-04-02 23:31:34,018 INFO L226 Difference]: Without dead ends: 48 [2023-04-02 23:31:34,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2023-04-02 23:31:34,019 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:31:34,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 235 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:31:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-04-02 23:31:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-04-02 23:31:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 14 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 23:31:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-04-02 23:31:34,026 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 70 [2023-04-02 23:31:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:31:34,026 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-04-02 23:31:34,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-02 23:31:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-04-02 23:31:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 23:31:34,027 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:34,027 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:34,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-02 23:31:34,227 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 [2023-04-02 23:31:34,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:34,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash -40224908, now seen corresponding path program 7 times [2023-04-02 23:31:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:34,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156278304] [2023-04-02 23:31:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:34,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:34,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:31:34,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742103127] [2023-04-02 23:31:34,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 23:31:34,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:34,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:34,240 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) [2023-04-02 23:31:34,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 23:31:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:31:39,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-02 23:31:39,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 41 proven. 85 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-04-02 23:31:39,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:31:43,781 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 23:32:04,613 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_153 Int) (v_main_~k~0_BEFORE_CALL_163 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 15) (* v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 6) (* v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 10) (* 29 v_main_~y~0_BEFORE_CALL_153)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153) (* v_main_~k~0_BEFORE_CALL_163 v_main_~y~0_BEFORE_CALL_153))))) is different from true [2023-04-02 23:32:23,123 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0) (forall ((v_main_~y~0_BEFORE_CALL_153 Int) (v_main_~k~0_BEFORE_CALL_163 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 15) (* v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 6) (* v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153 10) (* 29 v_main_~y~0_BEFORE_CALL_153)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_153 v_main_~y~0_BEFORE_CALL_153) (* v_main_~k~0_BEFORE_CALL_163 v_main_~y~0_BEFORE_CALL_153))))) is different from true [2023-04-02 23:32:27,133 WARN L839 $PredicateComparison]: unable to prove that (or (< c_main_~c~0 c_main_~k~0) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 23:32:35,171 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) (* c_main_~y~0 c_main_~y~0) 1))))) is different from false [2023-04-02 23:32:37,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:37,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156278304] [2023-04-02 23:32:37,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:37,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742103127] [2023-04-02 23:32:37,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742103127] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:32:37,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [115564970] [2023-04-02 23:32:37,190 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:37,190 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:37,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:37,190 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:37,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:37,199 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:32:37,403 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:37,405 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:32:37,406 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:32:37,408 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:37,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3036#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:37,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:37,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:32:37,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-04-02 23:32:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070170203] [2023-04-02 23:32:37,849 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:37,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 23:32:37,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 23:32:37,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=683, Unknown=5, NotChecked=280, Total=1056 [2023-04-02 23:32:37,850 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-02 23:32:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:38,105 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2023-04-02 23:32:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 23:32:38,106 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 77 [2023-04-02 23:32:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:38,106 INFO L225 Difference]: With dead ends: 57 [2023-04-02 23:32:38,106 INFO L226 Difference]: Without dead ends: 51 [2023-04-02 23:32:38,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=101, Invalid=784, Unknown=5, NotChecked=300, Total=1190 [2023-04-02 23:32:38,107 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:38,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 235 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:32:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-04-02 23:32:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-04-02 23:32:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 15 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 23:32:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2023-04-02 23:32:38,116 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 77 [2023-04-02 23:32:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:38,117 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2023-04-02 23:32:38,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-02 23:32:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2023-04-02 23:32:38,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 23:32:38,117 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:38,117 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:38,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 23:32:38,325 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 [2023-04-02 23:32:38,325 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:38,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1456260022, now seen corresponding path program 8 times [2023-04-02 23:32:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:38,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019627578] [2023-04-02 23:32:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:38,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:38,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690773200] [2023-04-02 23:32:38,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:32:38,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:38,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:38,339 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:32:38,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process