/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/lcm1_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:23:42,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:23:42,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:23:42,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:23:42,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:23:42,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:23:42,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:23:42,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:23:42,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:23:42,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:23:42,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:23:42,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:23:42,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:23:42,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:23:42,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:23:42,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:23:42,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:23:42,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:23:42,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:23:42,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:23:42,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:23:42,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:23:42,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:23:42,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:23:42,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 23:23:42,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:23:42,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:23:42,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:23:42,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:23:42,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:23:42,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:23:42,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:23:42,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:23:42,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:23:42,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:23:42,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:23:42,250 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 23:23:42,276 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:23:42,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:23:42,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:23:42,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:23:42,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:23:42,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:23:42,278 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:23:42,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:23:42,278 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:23:42,278 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:23:42,279 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:23:42,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:23:42,279 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:23:42,279 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:23:42,279 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:23:42,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:23:42,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:23:42,280 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:23:42,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:23:42,280 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:23:42,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:23:42,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:23:42,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:23:42,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:23:42,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:23:42,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:23:42,282 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:23:42,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:23:42,282 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:23:42,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:23:42,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:23:42,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:23:42,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:23:42,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:23:42,283 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:23:42,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:23:42,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:23:42,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:23:42,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:23:42,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:23:42,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:23:42,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:23:42,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:23:42,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:23:42,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:23:42,530 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:23:42,531 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:23:42,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound5.c [2023-03-31 23:23:43,621 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:23:43,833 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:23:43,834 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound5.c [2023-03-31 23:23:43,839 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb975fd24/74b9a7cb89774103af60c7e9c2d1afea/FLAG02ecc1330 [2023-03-31 23:23:43,857 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb975fd24/74b9a7cb89774103af60c7e9c2d1afea [2023-03-31 23:23:43,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:23:43,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:23:43,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:23:43,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:23:43,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:23:43,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:23:43" (1/1) ... [2023-03-31 23:23:43,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8d6a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:43, skipping insertion in model container [2023-03-31 23:23:43,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:23:43" (1/1) ... [2023-03-31 23:23:43,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:23:43,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:23:43,996 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/lcm1_valuebound5.c[552,565] [2023-03-31 23:23:44,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:23:44,017 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:23:44,034 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/lcm1_valuebound5.c[552,565] [2023-03-31 23:23:44,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:23:44,052 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:23:44,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44 WrapperNode [2023-03-31 23:23:44,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:23:44,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:23:44,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:23:44,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:23:44,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:23:44,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:23:44,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:23:44,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:23:44,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (1/1) ... [2023-03-31 23:23:44,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:23:44,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:23:44,118 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 23:23:44,139 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 23:23:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:23:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:23:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:23:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 23:23:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:23:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:23:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:23:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:23:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:23:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:23:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-03-31 23:23:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 23:23:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:23:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:23:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:23:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:23:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:23:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:23:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:23:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:23:44,216 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:23:44,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:23:44,349 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:23:44,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:23:44,376 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-31 23:23:44,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:23:44 BoogieIcfgContainer [2023-03-31 23:23:44,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:23:44,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:23:44,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:23:44,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:23:44,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:23:43" (1/3) ... [2023-03-31 23:23:44,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3b94ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:23:44, skipping insertion in model container [2023-03-31 23:23:44,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:23:44" (2/3) ... [2023-03-31 23:23:44,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3b94ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:23:44, skipping insertion in model container [2023-03-31 23:23:44,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:23:44" (3/3) ... [2023-03-31 23:23:44,384 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound5.c [2023-03-31 23:23:44,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:23:44,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:23:44,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:23:44,487 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;@75477fc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:23:44,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:23:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-03-31 23:23:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 23:23:44,497 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:23:44,497 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:23:44,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:23:44,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:23:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2021076366, now seen corresponding path program 1 times [2023-03-31 23:23:44,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:23:44,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467593507] [2023-03-31 23:23:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:23:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:23:44,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:23:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921493267] [2023-03-31 23:23:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:23:44,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:23:44,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:23:44,613 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 23:23:44,648 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 23:23:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:23:44,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2023-03-31 23:23:44,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:23:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-03-31 23:23:44,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:23:44,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:23:44,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467593507] [2023-03-31 23:23:44,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:23:44,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921493267] [2023-03-31 23:23:44,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921493267] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:23:44,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:23:44,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:23:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541130824] [2023-03-31 23:23:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:23:44,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:23:44,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:23:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:23:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:23:44,974 INFO L87 Difference]: Start difference. First operand has 36 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-03-31 23:23:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:23:45,401 INFO L93 Difference]: Finished difference Result 75 states and 121 transitions. [2023-03-31 23:23:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:23:45,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 30 [2023-03-31 23:23:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:23:45,408 INFO L225 Difference]: With dead ends: 75 [2023-03-31 23:23:45,408 INFO L226 Difference]: Without dead ends: 48 [2023-03-31 23:23:45,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 23:23:45,413 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 31 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 23:23:45,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 93 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 23:23:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-03-31 23:23:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2023-03-31 23:23:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-03-31 23:23:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2023-03-31 23:23:45,451 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 30 [2023-03-31 23:23:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:23:45,451 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2023-03-31 23:23:45,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-03-31 23:23:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2023-03-31 23:23:45,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-03-31 23:23:45,454 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:23:45,454 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:23:45,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 23:23:45,660 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 23:23:45,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:23:45,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:23:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1739570967, now seen corresponding path program 1 times [2023-03-31 23:23:45,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:23:45,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245089636] [2023-03-31 23:23:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:23:45,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:23:45,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:23:45,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12450354] [2023-03-31 23:23:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:23:45,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:23:45,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:23:45,705 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 23:23:45,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process