/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/volatile_alias.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:24:24,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:24:24,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:24:24,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:24:24,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:24:24,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:24:24,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:24:24,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:24:24,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:24:24,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:24:24,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:24:24,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:24:24,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:24:24,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:24:24,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:24:24,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:24:24,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:24:24,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:24:24,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:24:24,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:24:24,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:24:24,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:24:24,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:24:24,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:24:24,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 04:24:24,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:24:24,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:24:24,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:24:24,963 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 [2020-08-19 04:24:25,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:24:25,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:24:25,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:24:25,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:24:25,010 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:24:25,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:24:25,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:24:25,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:24:25,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:24:25,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:24:25,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:24:25,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:24:25,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:24:25,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:24:25,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:24:25,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:24:25,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:24:25,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:24:25,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:24:25,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:24:25,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:24:25,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:24:25,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:24:25,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:24:25,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:24:25,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:24:25,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:24:25,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:24:25,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:24:25,016 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:24:25,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:24:25,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:24:25,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:24:25,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:24:25,325 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:24:25,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.c_1.i [2020-08-19 04:24:25,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24eaeec6/e37080d4a3cb49afb8bc215d44d80d5d/FLAG6d1071b74 [2020-08-19 04:24:25,889 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:24:25,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/volatile_alias.c_1.i [2020-08-19 04:24:25,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24eaeec6/e37080d4a3cb49afb8bc215d44d80d5d/FLAG6d1071b74 [2020-08-19 04:24:26,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24eaeec6/e37080d4a3cb49afb8bc215d44d80d5d [2020-08-19 04:24:26,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:24:26,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:24:26,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:24:26,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:24:26,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:24:26,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b4d004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26, skipping insertion in model container [2020-08-19 04:24:26,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:24:26,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:24:26,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:24:26,563 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:24:26,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:24:26,590 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:24:26,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26 WrapperNode [2020-08-19 04:24:26,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:24:26,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:24:26,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:24:26,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:24:26,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (1/1) ... [2020-08-19 04:24:26,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:24:26,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:24:26,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:24:26,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:24:26,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (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 [2020-08-19 04:24:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:24:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:24:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:24:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:24:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:24:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:24:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:24:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:24:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:24:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:24:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:24:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:24:26,961 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:24:26,962 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 04:24:26,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:24:26 BoogieIcfgContainer [2020-08-19 04:24:26,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:24:26,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:24:26,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:24:26,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:24:26,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:24:26" (1/3) ... [2020-08-19 04:24:26,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23699285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:24:26, skipping insertion in model container [2020-08-19 04:24:26,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:26" (2/3) ... [2020-08-19 04:24:26,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23699285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:24:26, skipping insertion in model container [2020-08-19 04:24:26,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:24:26" (3/3) ... [2020-08-19 04:24:26,974 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.c_1.i [2020-08-19 04:24:26,984 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:24:26,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:24:27,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:24:27,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:24:27,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:24:27,028 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:24:27,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:24:27,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:24:27,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:24:27,029 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:24:27,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:24:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-08-19 04:24:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-19 04:24:27,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:27,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:27,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:24:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:27,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2096341077, now seen corresponding path program 1 times [2020-08-19 04:24:27,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:27,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085676866] [2020-08-19 04:24:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:24:27,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085676866] [2020-08-19 04:24:27,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:27,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:24:27,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617088701] [2020-08-19 04:24:27,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:24:27,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:27,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:24:27,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:24:27,300 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-08-19 04:24:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:27,397 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-08-19 04:24:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:24:27,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-19 04:24:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:27,419 INFO L225 Difference]: With dead ends: 19 [2020-08-19 04:24:27,419 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:24:27,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:24:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:24:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:24:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:24:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:24:27,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-08-19 04:24:27,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:27,445 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:24:27,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:24:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:24:27,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:24:27,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:24:27,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:24:27,493 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:24:27,493 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-19 04:24:27,494 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:24:27,494 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:24:27,494 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 04:24:27,494 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 04:24:27,495 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:24:27,495 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2020-08-19 04:24:27,497 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 26) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-19 04:24:27,498 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 26) no Hoare annotation was computed. [2020-08-19 04:24:27,498 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 26) no Hoare annotation was computed. [2020-08-19 04:24:27,498 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-19 04:24:27,498 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-08-19 04:24:27,499 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2020-08-19 04:24:27,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:24:27 BoogieIcfgContainer [2020-08-19 04:24:27,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:24:27,509 INFO L168 Benchmark]: Toolchain (without parser) took 1170.87 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 142.0 MB in the end (delta: -38.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:27,510 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-08-19 04:24:27,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.22 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:27,513 INFO L168 Benchmark]: Boogie Preprocessor took 105.75 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 181.9 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:27,514 INFO L168 Benchmark]: RCFGBuilder took 268.30 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 169.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:27,515 INFO L168 Benchmark]: TraceAbstraction took 538.52 ms. Allocated memory is still 203.4 MB. Free memory was 168.7 MB in the beginning and 142.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:27,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.22 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.75 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 181.9 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 268.30 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 169.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 538.52 ms. Allocated memory is still 203.4 MB. Free memory was 168.7 MB in the beginning and 142.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 12 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 15 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 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...