/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 interpolation-heuristic=FIRST --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/count_up_down-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 23:02:11,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 23:02:11,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 23:02:11,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 23:02:11,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 23:02:11,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 23:02:11,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 23:02:11,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 23:02:11,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 23:02:11,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 23:02:11,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 23:02:11,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 23:02:11,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 23:02:11,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 23:02:11,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 23:02:11,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 23:02:11,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 23:02:11,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 23:02:12,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 23:02:12,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 23:02:12,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 23:02:12,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 23:02:12,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 23:02:12,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 23:02:12,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 23:02:12,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 23:02:12,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 23:02:12,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 23:02:12,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 23:02:12,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 23:02:12,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 23:02:12,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 23:02:12,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 23:02:12,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 23:02:12,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 23:02:12,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 23:02:12,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 23:02:12,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 23:02:12,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 23:02:12,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 23:02:12,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 23:02:12,022 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 [2020-08-27 23:02:12,050 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 23:02:12,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 23:02:12,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 23:02:12,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 23:02:12,052 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 23:02:12,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 23:02:12,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 23:02:12,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 23:02:12,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 23:02:12,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 23:02:12,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 23:02:12,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 23:02:12,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 23:02:12,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 23:02:12,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 23:02:12,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 23:02:12,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 23:02:12,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 23:02:12,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 23:02:12,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 23:02:12,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 23:02:12,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 23:02:12,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 23:02:12,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 23:02:12,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 23:02:12,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 23:02:12,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 23:02:12,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 23:02:12,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 23:02:12,058 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-27 23:02:12,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 23:02:12,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 23:02:12,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 23:02:12,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 23:02:12,677 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 23:02:12,679 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down-2.c [2020-08-27 23:02:12,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67ea56738/c920dcd9aa174c4b83c3676d4299d291/FLAG0f75a12b2 [2020-08-27 23:02:13,369 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 23:02:13,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/count_up_down-2.c [2020-08-27 23:02:13,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67ea56738/c920dcd9aa174c4b83c3676d4299d291/FLAG0f75a12b2 [2020-08-27 23:02:13,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67ea56738/c920dcd9aa174c4b83c3676d4299d291 [2020-08-27 23:02:13,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 23:02:13,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 23:02:13,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 23:02:13,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 23:02:13,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 23:02:13,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:02:13" (1/1) ... [2020-08-27 23:02:13,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337988d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:13, skipping insertion in model container [2020-08-27 23:02:13,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:02:13" (1/1) ... [2020-08-27 23:02:13,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 23:02:13,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 23:02:14,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 23:02:14,011 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 23:02:14,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 23:02:14,049 INFO L208 MainTranslator]: Completed translation [2020-08-27 23:02:14,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14 WrapperNode [2020-08-27 23:02:14,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 23:02:14,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 23:02:14,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 23:02:14,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 23:02:14,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (1/1) ... [2020-08-27 23:02:14,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (1/1) ... [2020-08-27 23:02:14,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (1/1) ... [2020-08-27 23:02:14,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (1/1) ... [2020-08-27 23:02:14,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (1/1) ... [2020-08-27 23:02:14,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (1/1) ... [2020-08-27 23:02:14,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (1/1) ... [2020-08-27 23:02:14,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 23:02:14,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 23:02:14,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 23:02:14,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 23:02:14,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (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 [2020-08-27 23:02:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 23:02:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 23:02:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-27 23:02:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 23:02:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 23:02:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-27 23:02:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-27 23:02:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 23:02:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 23:02:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 23:02:14,461 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 23:02:14,461 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-27 23:02:14,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:02:14 BoogieIcfgContainer [2020-08-27 23:02:14,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 23:02:14,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 23:02:14,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 23:02:14,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 23:02:14,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:02:13" (1/3) ... [2020-08-27 23:02:14,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@977360b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:02:14, skipping insertion in model container [2020-08-27 23:02:14,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:02:14" (2/3) ... [2020-08-27 23:02:14,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@977360b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:02:14, skipping insertion in model container [2020-08-27 23:02:14,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:02:14" (3/3) ... [2020-08-27 23:02:14,483 INFO L109 eAbstractionObserver]: Analyzing ICFG count_up_down-2.c [2020-08-27 23:02:14,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 23:02:14,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 23:02:14,527 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 23:02:14,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 23:02:14,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 23:02:14,559 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 23:02:14,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 23:02:14,559 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 23:02:14,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 23:02:14,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 23:02:14,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 23:02:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-27 23:02:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-27 23:02:14,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 23:02:14,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 23:02:14,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 23:02:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 23:02:14,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-08-27 23:02:14,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 23:02:14,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447455002] [2020-08-27 23:02:14,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 23:02:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 23:02:14,742 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 23:02:14,743 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 23:02:14,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 23:02:14,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:02:14 BoogieIcfgContainer [2020-08-27 23:02:14,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 23:02:14,768 INFO L168 Benchmark]: Toolchain (without parser) took 1045.93 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 102.3 MB in the beginning and 155.2 MB in the end (delta: -52.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2020-08-27 23:02:14,769 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 23:02:14,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.79 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-27 23:02:14,771 INFO L168 Benchmark]: Boogie Preprocessor took 123.63 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 92.7 MB in the beginning and 178.7 MB in the end (delta: -86.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-27 23:02:14,772 INFO L168 Benchmark]: RCFGBuilder took 291.39 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 166.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-08-27 23:02:14,773 INFO L168 Benchmark]: TraceAbstraction took 297.05 ms. Allocated memory is still 200.3 MB. Free memory was 166.8 MB in the beginning and 155.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-08-27 23:02:14,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.79 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.63 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 92.7 MB in the beginning and 178.7 MB in the end (delta: -86.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.39 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 166.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 297.05 ms. Allocated memory is still 200.3 MB. Free memory was 166.8 MB in the beginning and 155.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int n = __VERIFIER_nondet_uint(); [L14] unsigned int x=n, y=0; [L15] COND FALSE !(x>0) [L20] CALL __VERIFIER_assert(y!=n) [L4] COND TRUE !(cond) [L5] __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...