/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/structure_assignment.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:23:23,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:23:23,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:23:23,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:23:23,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:23:23,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:23:23,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:23:23,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:23:23,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:23:23,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:23:23,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:23:23,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:23:23,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:23:23,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:23:23,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:23:23,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:23:23,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:23:23,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:23:23,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:23:23,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:23:23,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:23:23,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:23:23,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:23:23,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:23:23,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:23:23,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:23:23,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:23:23,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:23:23,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:23:23,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:23:23,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:23:23,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:23:23,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:23:23,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:23:23,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:23:23,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:23:23,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:23:23,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:23:23,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:23:23,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:23:23,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:23:23,927 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 [2020-09-24 19:23:23,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:23:23,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:23:23,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:23:23,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:23:23,970 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:23:23,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:23:23,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:23:23,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:23:23,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:23:23,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:23:23,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:23:23,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:23:23,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:23:23,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:23:23,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:23:23,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:23:23,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:23:23,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:23:23,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:23:23,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:23:23,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:23:23,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:23:23,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:23:23,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:23:23,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:23:23,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:23:23,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:23:23,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:23:23,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:23:23,977 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:23:24,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:23:24,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:23:24,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:23:24,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:23:24,458 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:23:24,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/structure_assignment.i [2020-09-24 19:23:24,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af9134835/cc729c39de7748eaa61c0c7aa532f460/FLAG99d7d9ebc [2020-09-24 19:23:25,106 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:23:25,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/structure_assignment.i [2020-09-24 19:23:25,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af9134835/cc729c39de7748eaa61c0c7aa532f460/FLAG99d7d9ebc [2020-09-24 19:23:25,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af9134835/cc729c39de7748eaa61c0c7aa532f460 [2020-09-24 19:23:25,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:23:25,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:23:25,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:23:25,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:23:25,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:23:25,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a29a149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25, skipping insertion in model container [2020-09-24 19:23:25,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:23:25,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:23:25,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:23:25,746 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:23:25,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:23:25,801 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:23:25,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25 WrapperNode [2020-09-24 19:23:25,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:23:25,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:23:25,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:23:25,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:23:25,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (1/1) ... [2020-09-24 19:23:25,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:23:25,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:23:25,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:23:25,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:23:25,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (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 [2020-09-24 19:23:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:23:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:23:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 19:23:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 19:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 19:23:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:23:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:23:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:23:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:23:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:23:26,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:23:26,302 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:23:26,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:23:26 BoogieIcfgContainer [2020-09-24 19:23:26,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:23:26,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:23:26,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:23:26,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:23:26,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:23:25" (1/3) ... [2020-09-24 19:23:26,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ada90fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:23:26, skipping insertion in model container [2020-09-24 19:23:26,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:25" (2/3) ... [2020-09-24 19:23:26,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ada90fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:23:26, skipping insertion in model container [2020-09-24 19:23:26,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:23:26" (3/3) ... [2020-09-24 19:23:26,340 INFO L109 eAbstractionObserver]: Analyzing ICFG structure_assignment.i [2020-09-24 19:23:26,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:23:26,372 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:23:26,394 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:23:26,423 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:23:26,423 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:23:26,423 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:23:26,424 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:23:26,424 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:23:26,424 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:23:26,424 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:23:26,424 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:23:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-24 19:23:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 19:23:26,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:23:26,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:23:26,457 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:23:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:23:26,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1759541196, now seen corresponding path program 1 times [2020-09-24 19:23:26,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:23:26,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179216647] [2020-09-24 19:23:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:23:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:27,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:27,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:23:27,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-24 19:23:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:23:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:23:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:23:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 19:23:27,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:23:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:27,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:23:27,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:23:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:23:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:23:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:23:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:23:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:23:27,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179216647] [2020-09-24 19:23:27,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:23:27,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:23:27,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103966471] [2020-09-24 19:23:27,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:23:27,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:23:27,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:23:27,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:23:27,233 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 7 states. [2020-09-24 19:23:27,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:23:27,421 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-09-24 19:23:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:23:27,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-24 19:23:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:23:27,436 INFO L225 Difference]: With dead ends: 44 [2020-09-24 19:23:27,436 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:23:27,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:23:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:23:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:23:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:23:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:23:27,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-24 19:23:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:23:27,473 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:23:27,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:23:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:23:27,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:23:27,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:23:27,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:23:27,526 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 19:23:27,526 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 19:23:27,526 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:23:27,527 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|)) [2020-09-24 19:23:27,527 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:23:27,527 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-24 19:23:27,527 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-24 19:23:27,528 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-24 19:23:27,528 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2020-09-24 19:23:27,528 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:23:27,528 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:23:27,529 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:23:27,529 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:23:27,529 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 19:23:27,529 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 26) no Hoare annotation was computed. [2020-09-24 19:23:27,529 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 19:23:27,529 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 19:23:27,530 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 19:23:27,530 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 19:23:27,530 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 19:23:27,530 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 19:23:27,530 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 19:23:27,530 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 19:23:27,531 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-24 19:23:27,531 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-24 19:23:27,531 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 26) no Hoare annotation was computed. [2020-09-24 19:23:27,531 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 19 26) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 19:23:27,531 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 19:23:27,532 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 19:23:27,532 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 19:23:27,532 INFO L264 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: false [2020-09-24 19:23:27,532 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 19:23:27,532 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-24 19:23:27,532 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-24 19:23:27,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:23:27 BoogieIcfgContainer [2020-09-24 19:23:27,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:23:27,548 INFO L168 Benchmark]: Toolchain (without parser) took 2069.45 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 110.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:27,549 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 19:23:27,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.61 ms. Allocated memory is still 140.5 MB. Free memory was 101.3 MB in the beginning and 91.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:27,552 INFO L168 Benchmark]: Boogie Preprocessor took 122.42 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 181.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:27,553 INFO L168 Benchmark]: RCFGBuilder took 381.43 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 167.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:27,554 INFO L168 Benchmark]: TraceAbstraction took 1225.80 ms. Allocated memory is still 203.4 MB. Free memory was 167.1 MB in the beginning and 110.9 MB in the end (delta: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:27,560 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.61 ms. Allocated memory is still 140.5 MB. Free memory was 101.3 MB in the beginning and 91.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.42 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 181.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.43 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 167.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1225.80 ms. Allocated memory is still 203.4 MB. Free memory was 167.1 MB in the beginning and 110.9 MB in the end (delta: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 4 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 11 SDslu, 67 SDs, 0 SdLazy, 59 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1660 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...