/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:14:54,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:14:54,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:14:54,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:14:54,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:14:54,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:14:54,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:14:54,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:14:54,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:14:54,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:14:54,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:14:54,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:14:54,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:14:54,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:14:54,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:14:54,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:14:54,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:14:54,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:14:54,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:14:54,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:14:54,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:14:54,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:14:54,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:14:54,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:14:54,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:14:54,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:14:54,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:14:54,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:14:54,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:14:54,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:14:54,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:14:54,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:14:54,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:14:54,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:14:54,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:14:54,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:14:54,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:14:54,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:14:54,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:14:54,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:14:54,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:14:54,904 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 03:14:54,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:14:54,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:14:54,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:14:54,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:14:54,955 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:14:54,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:14:54,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:14:54,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:14:54,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:14:54,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:14:54,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:14:54,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:14:54,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:14:54,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:14:54,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:14:54,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:14:54,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:14:54,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:14:54,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:14:54,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:14:54,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:14:54,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:14:54,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:14:54,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:14:54,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:14:54,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:14:54,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:14:54,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:14:54,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:14:54,962 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:14:55,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:14:55,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:14:55,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:14:55,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:14:55,476 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:14:55,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-09-25 03:14:55,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f5c5b1df/28f732179d6b4996a7f6122e2740a2be/FLAG02e99607d [2020-09-25 03:14:56,093 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:14:56,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-09-25 03:14:56,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f5c5b1df/28f732179d6b4996a7f6122e2740a2be/FLAG02e99607d [2020-09-25 03:14:56,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f5c5b1df/28f732179d6b4996a7f6122e2740a2be [2020-09-25 03:14:56,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:14:56,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:14:56,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:14:56,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:14:56,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:14:56,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56, skipping insertion in model container [2020-09-25 03:14:56,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:14:56,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:14:56,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:14:56,752 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:14:56,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:14:56,786 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:14:56,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56 WrapperNode [2020-09-25 03:14:56,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:14:56,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:14:56,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:14:56,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:14:56,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (1/1) ... [2020-09-25 03:14:56,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:14:56,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:14:56,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:14:56,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:14:56,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (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 03:14:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:14:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:14:56,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:14:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:14:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:14:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:14:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 03:14:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:14:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:14:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:14:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:14:57,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:14:57,207 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:14:57,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:14:57 BoogieIcfgContainer [2020-09-25 03:14:57,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:14:57,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:14:57,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:14:57,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:14:57,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:14:56" (1/3) ... [2020-09-25 03:14:57,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a1bd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:14:57, skipping insertion in model container [2020-09-25 03:14:57,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:56" (2/3) ... [2020-09-25 03:14:57,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a1bd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:14:57, skipping insertion in model container [2020-09-25 03:14:57,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:14:57" (3/3) ... [2020-09-25 03:14:57,255 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.i [2020-09-25 03:14:57,285 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:14:57,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:14:57,331 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:14:57,366 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:14:57,366 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:14:57,367 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:14:57,367 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:14:57,367 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:14:57,367 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:14:57,367 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:14:57,368 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:14:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 03:14:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 03:14:57,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:57,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:14:57,406 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:57,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1049886255, now seen corresponding path program 1 times [2020-09-25 03:14:57,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:57,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418030438] [2020-09-25 03:14:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:57,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:57,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:14:57,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 03:14:57,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:14:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:14:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:14:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:14:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:58,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:58,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:58,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:58,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:14:58,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:58,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:58,055 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 03:14:58,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418030438] [2020-09-25 03:14:58,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:14:58,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:14:58,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040223162] [2020-09-25 03:14:58,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:14:58,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:58,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:14:58,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:14:58,098 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-09-25 03:14:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:58,281 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2020-09-25 03:14:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:14:58,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-09-25 03:14:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:58,293 INFO L225 Difference]: With dead ends: 34 [2020-09-25 03:14:58,294 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:14:58,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:14:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:14:58,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:14:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:14:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:14:58,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-25 03:14:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:58,329 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:14:58,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:14:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:14:58,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:14:58,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:14:58,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:14:58,391 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 03:14:58,391 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 03:14:58,391 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:14:58,392 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|)) [2020-09-25 03:14:58,392 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:14:58,392 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:14:58,392 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:14:58,392 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:14:58,392 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:14:58,393 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-09-25 03:14:58,393 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 6 16) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 03:14:58,393 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed. [2020-09-25 03:14:58,393 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 03:14:58,393 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed. [2020-09-25 03:14:58,394 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 03:14:58,394 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 03:14:58,394 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-09-25 03:14:58,394 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 03:14:58,394 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 03:14:58,394 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 03:14:58,395 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 03:14:58,395 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 03:14:58,395 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-25 03:14:58,395 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 03:14:58,395 INFO L268 CegarLoopResult]: For program point L12-5(lines 12 14) no Hoare annotation was computed. [2020-09-25 03:14:58,395 INFO L268 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-09-25 03:14:58,396 INFO L268 CegarLoopResult]: For program point L8-3(line 8) no Hoare annotation was computed. [2020-09-25 03:14:58,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:14:58 BoogieIcfgContainer [2020-09-25 03:14:58,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:14:58,408 INFO L168 Benchmark]: Toolchain (without parser) took 1928.64 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 111.4 MB in the end (delta: -8.1 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:58,409 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 03:14:58,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.05 ms. Allocated memory is still 141.6 MB. Free memory was 102.7 MB in the beginning and 93.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:58,412 INFO L168 Benchmark]: Boogie Preprocessor took 108.96 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 182.5 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:58,413 INFO L168 Benchmark]: RCFGBuilder took 318.51 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 169.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:58,414 INFO L168 Benchmark]: TraceAbstraction took 1175.99 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 111.4 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:58,418 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 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.05 ms. Allocated memory is still 141.6 MB. Free memory was 102.7 MB in the beginning and 93.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.96 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 182.5 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.51 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 169.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1175.99 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 111.4 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 10 SDslu, 52 SDs, 0 SdLazy, 52 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1258 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...