/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:19:17,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:19:17,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:19:17,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:19:17,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:19:17,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:19:17,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:19:17,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:19:17,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:19:17,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:19:17,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:19:17,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:19:17,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:19:17,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:19:17,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:19:17,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:19:17,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:19:17,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:19:17,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:19:17,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:19:17,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:19:17,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:19:17,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:19:17,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:19:17,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:19:17,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:19:17,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:19:17,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:19:17,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:19:17,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:19:17,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:19:17,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:19:17,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:19:17,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:19:17,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:19:17,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:19:17,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:19:17,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:19:17,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:19:17,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:19:17,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:19:17,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:19:17,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:19:17,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:19:17,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:19:17,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:19:17,369 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:19:17,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:19:17,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:19:17,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:19:17,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:19:17,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:19:17,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:19:17,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:19:17,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:19:17,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:19:17,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:19:17,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:19:17,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:19:17,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:19:17,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:19:17,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:19:17,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:19:17,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:17,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:19:17,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:19:17,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:19:17,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:19:17,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:19:17,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:19:17,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:19:17,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:19:17,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:19:17,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:19:17,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:19:17,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:19:17,865 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:19:17,867 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-2.c [2020-09-25 02:19:17,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b4b50d9/4d67b8860cd7426bad40314420cd8ef0/FLAGaa10c6a83 [2020-09-25 02:19:18,514 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:19:18,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/trex03-2.c [2020-09-25 02:19:18,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b4b50d9/4d67b8860cd7426bad40314420cd8ef0/FLAGaa10c6a83 [2020-09-25 02:19:18,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b4b50d9/4d67b8860cd7426bad40314420cd8ef0 [2020-09-25 02:19:18,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:19:18,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:19:18,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:18,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:19:18,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:19:18,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:18" (1/1) ... [2020-09-25 02:19:18,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bc374b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:18, skipping insertion in model container [2020-09-25 02:19:18,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:18" (1/1) ... [2020-09-25 02:19:18,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:19:18,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:19:19,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:19,205 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:19:19,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:19,243 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:19:19,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19 WrapperNode [2020-09-25 02:19:19,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:19,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:19:19,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:19:19,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:19:19,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (1/1) ... [2020-09-25 02:19:19,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (1/1) ... [2020-09-25 02:19:19,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (1/1) ... [2020-09-25 02:19:19,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (1/1) ... [2020-09-25 02:19:19,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (1/1) ... [2020-09-25 02:19:19,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (1/1) ... [2020-09-25 02:19:19,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (1/1) ... [2020-09-25 02:19:19,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:19:19,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:19:19,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:19:19,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:19:19,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:19:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:19:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:19:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:19:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:19:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:19:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 02:19:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 02:19:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:19:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:19:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:19:19,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:19:19,734 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:19:19,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:19 BoogieIcfgContainer [2020-09-25 02:19:19,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:19:19,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:19:19,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:19:19,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:19:19,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:18" (1/3) ... [2020-09-25 02:19:19,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9fd318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:19, skipping insertion in model container [2020-09-25 02:19:19,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:19" (2/3) ... [2020-09-25 02:19:19,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9fd318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:19, skipping insertion in model container [2020-09-25 02:19:19,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:19" (3/3) ... [2020-09-25 02:19:19,775 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-2.c [2020-09-25 02:19:19,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:19:19,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:19:19,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:19:19,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:19:19,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:19:19,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:19:19,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:19:19,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:19:19,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:19:19,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:19:19,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:19:19,874 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-09-25 02:19:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 02:19:19,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:19,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:19,884 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1978237477, now seen corresponding path program 1 times [2020-09-25 02:19:19,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:19,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80136581] [2020-09-25 02:19:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:20,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:20,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:19:20,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:20,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 02:19:20,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 02:19:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:19:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:19:20,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:20,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:20,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:20,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:20,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:19:20,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:20,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:20,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:20,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:20,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:20,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80136581] [2020-09-25 02:19:20,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:20,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:19:20,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455634483] [2020-09-25 02:19:20,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:19:20,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:19:20,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:19:20,505 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-09-25 02:19:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:20,613 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-09-25 02:19:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:19:20,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-25 02:19:20,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:20,623 INFO L225 Difference]: With dead ends: 49 [2020-09-25 02:19:20,623 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:19:20,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:19:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:19:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:19:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:19:20,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-09-25 02:19:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:20,655 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:19:20,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:19:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:19:20,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:19:20,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:19:20,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:19:20,723 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 02:19:20,723 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:19:20,723 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:19:20,723 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:19:20,724 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:19:20,725 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:19:20,725 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 02:19:20,725 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 29) no Hoare annotation was computed. [2020-09-25 02:19:20,725 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 02:19:20,725 INFO L268 CegarLoopResult]: For program point L21(lines 21 22) no Hoare annotation was computed. [2020-09-25 02:19:20,726 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 02:19:20,726 INFO L268 CegarLoopResult]: For program point L21-3(lines 20 22) no Hoare annotation was computed. [2020-09-25 02:19:20,726 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 02:19:20,726 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 02:19:20,726 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 02:19:20,726 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 29) no Hoare annotation was computed. [2020-09-25 02:19:20,727 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 29) the Hoare annotation is: true [2020-09-25 02:19:20,727 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 02:19:20,727 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 02:19:20,728 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 02:19:20,729 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-09-25 02:19:20,729 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 02:19:20,729 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 02:19:20,730 INFO L271 CegarLoopResult]: At program point L18-2(lines 18 25) the Hoare annotation is: true [2020-09-25 02:19:20,730 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 02:19:20,731 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 25) the Hoare annotation is: (or (<= main_~x1~0 (* 4294967296 (div main_~x1~0 4294967296))) (<= main_~x3~0 (* 4294967296 (div main_~x3~0 4294967296))) (<= main_~x2~0 (* 4294967296 (div main_~x2~0 4294967296)))) [2020-09-25 02:19:20,732 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 02:19:20,732 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 02:19:20,732 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 02:19:20,733 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-25 02:19:20,736 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 02:19:20,736 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-25 02:19:20,736 INFO L268 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-09-25 02:19:20,737 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 02:19:20,738 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 02:19:20,738 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 02:19:20,738 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 02:19:20,738 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 02:19:20,739 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 02:19:20,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:20 BoogieIcfgContainer [2020-09-25 02:19:20,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:19:20,763 INFO L168 Benchmark]: Toolchain (without parser) took 1853.08 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 101.5 MB in the beginning and 123.1 MB in the end (delta: -21.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:20,766 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:19:20,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.14 ms. Allocated memory is still 138.4 MB. Free memory was 100.8 MB in the beginning and 91.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:20,769 INFO L168 Benchmark]: Boogie Preprocessor took 121.19 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 178.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:20,779 INFO L168 Benchmark]: RCFGBuilder took 385.39 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 164.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:20,781 INFO L168 Benchmark]: TraceAbstraction took 1001.76 ms. Allocated memory is still 200.3 MB. Free memory was 164.6 MB in the beginning and 123.1 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:20,791 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.14 ms. Allocated memory is still 138.4 MB. Free memory was 100.8 MB in the beginning and 91.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.19 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 178.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.39 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 164.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1001.76 ms. Allocated memory is still 200.3 MB. Free memory was 164.6 MB in the beginning and 123.1 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 7 SDslu, 95 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 28 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 966 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...