/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:29:06,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:29:06,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:29:06,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:29:06,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:29:06,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:29:06,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:29:06,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:29:06,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:29:06,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:29:06,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:29:06,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:29:06,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:29:06,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:29:06,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:29:06,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:29:06,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:29:06,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:29:06,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:29:06,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:29:06,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:29:06,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:29:06,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:29:06,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:29:06,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 23:29:06,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:29:06,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:29:06,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:29:06,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:29:06,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:29:06,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:29:06,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:29:06,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:29:06,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:29:06,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:29:06,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:29:06,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:29:06,987 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:29:06,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:29:06,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:29:06,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:29:06,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:29:06,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:29:06,996 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:29:06,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:29:06,996 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:29:06,996 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:29:06,996 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:29:06,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:29:06,997 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:29:06,997 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:29:06,997 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:29:06,997 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:29:06,997 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:29:06,997 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:29:06,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:29:06,997 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:29:06,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:29:06,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:29:06,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:29:06,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:29:07,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:29:07,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:29:07,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:29:07,201 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:29:07,201 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:29:07,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound5.c [2023-03-31 23:29:08,192 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:29:08,348 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:29:08,348 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound5.c [2023-03-31 23:29:08,352 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c119ad50d/666aa6d5bce14329ab75f017bcf516d3/FLAGe62f164e8 [2023-03-31 23:29:08,753 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c119ad50d/666aa6d5bce14329ab75f017bcf516d3 [2023-03-31 23:29:08,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:29:08,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:29:08,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:29:08,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:29:08,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:29:08,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cc386d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08, skipping insertion in model container [2023-03-31 23:29:08,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:29:08,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:29:08,874 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_valuebound5.c[458,471] [2023-03-31 23:29:08,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:29:08,890 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:29:08,897 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_valuebound5.c[458,471] [2023-03-31 23:29:08,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:29:08,916 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:29:08,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08 WrapperNode [2023-03-31 23:29:08,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:29:08,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:29:08,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:29:08,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:29:08,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:29:08,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:29:08,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:29:08,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:29:08,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (1/1) ... [2023-03-31 23:29:08,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:29:08,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:29:08,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 23:29:08,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 23:29:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:29:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:29:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:29:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 23:29:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:29:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:29:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:29:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:29:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:29:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:29:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:29:09,045 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:29:09,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:29:09,154 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:29:09,171 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:29:09,171 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 23:29:09,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:29:09 BoogieIcfgContainer [2023-03-31 23:29:09,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:29:09,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:29:09,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:29:09,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:29:09,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:29:08" (1/3) ... [2023-03-31 23:29:09,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b26eb0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:29:09, skipping insertion in model container [2023-03-31 23:29:09,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:29:08" (2/3) ... [2023-03-31 23:29:09,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b26eb0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:29:09, skipping insertion in model container [2023-03-31 23:29:09,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:29:09" (3/3) ... [2023-03-31 23:29:09,179 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound5.c [2023-03-31 23:29:09,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:29:09,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:29:09,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:29:09,227 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;@6c73e1ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:29:09,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:29:09,231 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) [2023-03-31 23:29:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 23:29:09,236 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:29:09,236 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:29:09,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:29:09,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:29:09,240 INFO L85 PathProgramCache]: Analyzing trace with hash 395619074, now seen corresponding path program 1 times [2023-03-31 23:29:09,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:29:09,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652300646] [2023-03-31 23:29:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:29:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:29:09,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:29:09,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220554695] [2023-03-31 23:29:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:29:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:29:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:29:09,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:29:09,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:29:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:29:09,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-31 23:29:09,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:29:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 23:29:09,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:29:09,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:29:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652300646] [2023-03-31 23:29:09,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:29:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220554695] [2023-03-31 23:29:09,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220554695] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:29:09,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:29:09,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:29:09,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402713092] [2023-03-31 23:29:09,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:29:09,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:29:09,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:29:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:29:09,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:29:09,537 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) [2023-03-31 23:29:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:29:09,617 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-03-31 23:29:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:29:09,619 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 [2023-03-31 23:29:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:29:09,625 INFO L225 Difference]: With dead ends: 51 [2023-03-31 23:29:09,626 INFO L226 Difference]: Without dead ends: 28 [2023-03-31 23:29:09,628 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 [2023-03-31 23:29:09,632 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 [2023-03-31 23:29:09,633 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] [2023-03-31 23:29:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-03-31 23:29:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-03-31 23:29:09,658 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) [2023-03-31 23:29:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-03-31 23:29:09,660 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2023-03-31 23:29:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:29:09,660 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-03-31 23:29:09,661 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) [2023-03-31 23:29:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-03-31 23:29:09,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 23:29:09,662 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:29:09,663 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] [2023-03-31 23:29:09,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:29:09,867 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 [2023-03-31 23:29:09,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:29:09,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:29:09,868 INFO L85 PathProgramCache]: Analyzing trace with hash 398349892, now seen corresponding path program 1 times [2023-03-31 23:29:09,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:29:09,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921608336] [2023-03-31 23:29:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:29:09,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:29:09,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:29:09,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211785920] [2023-03-31 23:29:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:29:09,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:29:09,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:29:09,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:29:09,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 23:29:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:29:09,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2023-03-31 23:29:09,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:29:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 23:29:10,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:29:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 23:29:10,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:29:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921608336] [2023-03-31 23:29:10,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:29:10,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211785920] [2023-03-31 23:29:10,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211785920] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:29:10,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [923220907] [2023-03-31 23:29:10,155 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-03-31 23:29:10,155 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:29:10,158 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:29:10,162 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:29:10,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:29:10,216 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:29:10,449 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 48 for LOIs [2023-03-31 23:29:10,564 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-03-31 23:29:10,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:29:10,571 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:29:11,039 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352#(and (exists ((v_main_~x~0_BEFORE_CALL_11 Int) (v_main_~y~0_BEFORE_CALL_11 Int) (v_main_~c~0_BEFORE_CALL_7 Int) (v_main_~k~0_BEFORE_CALL_11 Int)) (and (or (and (<= v_main_~k~0_BEFORE_CALL_11 5) (<= 1 v_main_~y~0_BEFORE_CALL_11) (<= v_main_~c~0_BEFORE_CALL_7 6) (<= 1 v_main_~x~0_BEFORE_CALL_11) (<= 0 v_main_~k~0_BEFORE_CALL_11) (= |#NULL.offset| 0) (<= 1 v_main_~c~0_BEFORE_CALL_7) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (<= v_main_~k~0_BEFORE_CALL_11 5) (= v_main_~y~0_BEFORE_CALL_11 0) (= v_main_~x~0_BEFORE_CALL_11 0) (<= 0 v_main_~k~0_BEFORE_CALL_11) (= v_main_~c~0_BEFORE_CALL_7 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (not (= (+ v_main_~y~0_BEFORE_CALL_11 (* 30 v_main_~x~0_BEFORE_CALL_11)) (+ (* 15 (* v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11)) (* (* v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11) 6) (* (* v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11) 10)))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 23:29:11,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:29:11,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 23:29:11,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-03-31 23:29:11,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302529516] [2023-03-31 23:29:11,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 23:29:11,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 23:29:11,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:29:11,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 23:29:11,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-03-31 23:29:11,042 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) [2023-03-31 23:29:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:29:11,166 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-03-31 23:29:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 23:29:11,166 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 [2023-03-31 23:29:11,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:29:11,167 INFO L225 Difference]: With dead ends: 39 [2023-03-31 23:29:11,167 INFO L226 Difference]: Without dead ends: 35 [2023-03-31 23:29:11,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-03-31 23:29:11,168 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:29:11,169 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] [2023-03-31 23:29:11,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-31 23:29:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-03-31 23:29:11,174 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) [2023-03-31 23:29:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-03-31 23:29:11,174 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2023-03-31 23:29:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:29:11,174 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-03-31 23:29:11,175 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) [2023-03-31 23:29:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-03-31 23:29:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-03-31 23:29:11,175 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:29:11,175 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] [2023-03-31 23:29:11,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 23:29:11,377 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 [2023-03-31 23:29:11,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:29:11,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:29:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2024645172, now seen corresponding path program 1 times [2023-03-31 23:29:11,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:29:11,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066859448] [2023-03-31 23:29:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:29:11,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:29:11,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:29:11,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74674668] [2023-03-31 23:29:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:29:11,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:29:11,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:29:11,388 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:29:11,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 23:29:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:29:11,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjunts are in the unsatisfiable core [2023-03-31 23:29:11,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:29:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-03-31 23:29:11,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:29:15,586 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 [2023-03-31 23:29:36,197 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_17 Int) (v_main_~y~0_BEFORE_CALL_16 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 15) (* v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 6) (* 29 v_main_~y~0_BEFORE_CALL_16) (* v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 10)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16) (* v_main_~y~0_BEFORE_CALL_16 v_main_~k~0_BEFORE_CALL_17))))) is different from true [2023-03-31 23:29:54,260 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_17 Int) (v_main_~y~0_BEFORE_CALL_16 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 15) (* v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 6) (* 29 v_main_~y~0_BEFORE_CALL_16) (* v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16 10)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_16 v_main_~y~0_BEFORE_CALL_16) (* v_main_~y~0_BEFORE_CALL_16 v_main_~k~0_BEFORE_CALL_17)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-03-31 23:29:58,274 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 [2023-03-31 23:30:06,335 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 [2023-03-31 23:30:08,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:30:08,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066859448] [2023-03-31 23:30:08,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:30:08,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74674668] [2023-03-31 23:30:08,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74674668] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:30:08,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [218650361] [2023-03-31 23:30:08,416 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-03-31 23:30:08,417 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:30:08,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:30:08,417 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:30:08,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:30:08,436 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:30:08,580 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-03-31 23:30:08,582 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-03-31 23:30:08,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:30:08,587 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:30:08,831 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 [2023-03-31 23:30:08,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:30:08,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:30:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-03-31 23:30:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938297115] [2023-03-31 23:30:08,832 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-03-31 23:30:08,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 23:30:08,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:30:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 23:30:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=402, Unknown=5, NotChecked=220, Total=702 [2023-03-31 23:30:08,833 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) [2023-03-31 23:30:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:30:08,944 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-03-31 23:30:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 23:30:08,945 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 [2023-03-31 23:30:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:30:08,945 INFO L225 Difference]: With dead ends: 39 [2023-03-31 23:30:08,945 INFO L226 Difference]: Without dead ends: 33 [2023-03-31 23:30:08,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=88, Invalid=479, Unknown=5, NotChecked=240, Total=812 [2023-03-31 23:30:08,947 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-03-31 23:30:08,947 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] [2023-03-31 23:30:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-03-31 23:30:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-03-31 23:30:08,952 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) [2023-03-31 23:30:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-03-31 23:30:08,952 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 35 [2023-03-31 23:30:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:30:08,954 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-03-31 23:30:08,955 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) [2023-03-31 23:30:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-03-31 23:30:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 23:30:08,956 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:30:08,956 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] [2023-03-31 23:30:08,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 23:30:09,160 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 [2023-03-31 23:30:09,161 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:30:09,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:30:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash -170934026, now seen corresponding path program 2 times [2023-03-31 23:30:09,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:30:09,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083438223] [2023-03-31 23:30:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:09,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:30:09,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:30:09,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772400851] [2023-03-31 23:30:09,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 23:30:09,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:30:09,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:30:09,171 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) [2023-03-31 23:30:09,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 23:30:09,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 23:30:09,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 23:30:09,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2023-03-31 23:30:09,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:30:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-03-31 23:30:09,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:30:13,444 WARN L839 $PredicateComparison]: unable to prove that (or (= (+ (* c_main_~y~0 c_main_~k~0) c_main_~k~0) (+ (* 2 c_main_~y~0) (* c_main_~y~0 c_main_~y~0) 1)) (<= c_main_~k~0 c_main_~c~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_~c~0 1) c_main_~k~0)) is different from false