/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:27:58,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:27:58,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:27:58,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:27:58,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:27:58,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:27:58,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:27:58,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:27:58,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:27:58,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:27:58,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:27:58,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:27:58,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:27:58,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:27:58,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:27:58,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:27:58,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:27:58,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:27:58,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:27:58,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:27:58,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:27:58,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:27:58,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:27:58,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:27:58,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:27:58,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:27:58,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:27:58,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:27:58,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:27:58,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:27:58,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:27:58,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:27:58,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:27:58,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:27:58,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:27:58,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:27:58,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:27:58,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:27:58,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:27:58,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:27:58,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:27:58,972 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 [2020-08-21 17:27:59,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:27:59,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:27:59,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:27:59,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:27:59,021 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:27:59,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:27:59,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:27:59,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:27:59,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:27:59,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:27:59,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:27:59,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:27:59,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:27:59,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:27:59,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:27:59,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:27:59,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:27:59,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:27:59,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:27:59,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:27:59,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:27:59,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:27:59,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:27:59,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:27:59,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:27:59,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:27:59,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:27:59,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:27:59,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:27:59,027 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:27:59,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:27:59,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:27:59,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:27:59,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:27:59,381 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:27:59,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2020-08-21 17:27:59,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a86a6aef/cd18eaece1234389b9fd8c3576342b65/FLAG46e0f3732 [2020-08-21 17:27:59,887 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:27:59,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2020-08-21 17:27:59,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a86a6aef/cd18eaece1234389b9fd8c3576342b65/FLAG46e0f3732 [2020-08-21 17:28:00,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a86a6aef/cd18eaece1234389b9fd8c3576342b65 [2020-08-21 17:28:00,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:28:00,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:28:00,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:28:00,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:28:00,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:28:00,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00, skipping insertion in model container [2020-08-21 17:28:00,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:28:00,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:28:00,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:28:00,509 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:28:00,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:28:00,535 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:28:00,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00 WrapperNode [2020-08-21 17:28:00,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:28:00,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:28:00,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:28:00,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:28:00,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (1/1) ... [2020-08-21 17:28:00,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:28:00,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:28:00,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:28:00,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:28:00,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (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 [2020-08-21 17:28:00,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:28:00,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:28:00,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 17:28:00,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:28:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:28:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-08-21 17:28:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 17:28:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:28:00,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:28:00,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:28:00,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:28:00,891 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 17:28:00,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:28:00 BoogieIcfgContainer [2020-08-21 17:28:00,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:28:00,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:28:00,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:28:00,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:28:00,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:28:00" (1/3) ... [2020-08-21 17:28:00,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b36d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:28:00, skipping insertion in model container [2020-08-21 17:28:00,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:00" (2/3) ... [2020-08-21 17:28:00,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b36d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:28:00, skipping insertion in model container [2020-08-21 17:28:00,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:28:00" (3/3) ... [2020-08-21 17:28:00,903 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-1.c [2020-08-21 17:28:00,914 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:28:00,921 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:28:00,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:28:00,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:28:00,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:28:00,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:28:00,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:28:00,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:28:00,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:28:00,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:28:00,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:28:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-21 17:28:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-21 17:28:00,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:00,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:00,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:00,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-08-21 17:28:00,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:00,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295856513] [2020-08-21 17:28:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:28:01,107 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:28:01,109 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:28:01,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:28:01,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:28:01 BoogieIcfgContainer [2020-08-21 17:28:01,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:28:01,126 INFO L168 Benchmark]: Toolchain (without parser) took 836.23 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 154.2 MB in the end (delta: -54.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:01,128 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:28:01,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.94 ms. Allocated memory is still 136.3 MB. Free memory was 99.7 MB in the beginning and 90.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:01,130 INFO L168 Benchmark]: Boogie Preprocessor took 111.41 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 178.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:01,131 INFO L168 Benchmark]: RCFGBuilder took 246.89 ms. Allocated memory is still 199.8 MB. Free memory was 178.3 MB in the beginning and 166.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:01,132 INFO L168 Benchmark]: TraceAbstraction took 227.07 ms. Allocated memory is still 199.8 MB. Free memory was 166.0 MB in the beginning and 154.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:01,136 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.94 ms. Allocated memory is still 136.3 MB. Free memory was 99.7 MB in the beginning and 90.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.41 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 178.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 246.89 ms. Allocated memory is still 199.8 MB. Free memory was 178.3 MB in the beginning and 166.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227.07 ms. Allocated memory is still 199.8 MB. Free memory was 166.0 MB in the beginning and 154.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned short N = __VERIFIER_nondet_ushort(); [L15] COND FALSE !(x < N) [L19] CALL __VERIFIER_assert(x % 2) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect! Received shutdown request...