/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:01:14,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:01:14,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:01:14,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:01:14,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:01:14,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:01:14,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:01:14,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:01:14,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:01:14,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:01:14,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:01:14,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:01:14,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:01:14,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:01:14,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:01:14,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:01:14,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:01:14,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:01:14,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:01:14,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:01:14,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:01:14,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:01:14,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:01:14,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:01:14,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 06:01:14,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:01:14,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:01:14,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:01:14,715 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 06:01:14,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:01:14,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:01:14,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:01:14,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:01:14,755 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:01:14,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:01:14,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:01:14,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:01:14,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:01:14,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:01:14,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:01:14,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:01:14,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:01:14,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:01:14,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:01:14,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:01:14,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:01:14,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:01:14,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:01:14,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:01:14,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:01:14,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:01:14,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:01:14,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:01:14,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:01:14,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:01:14,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:01:14,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:01:14,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:01:14,761 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:01:15,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:01:15,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:01:15,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:01:15,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:01:15,095 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:01:15,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2020-08-19 06:01:15,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b519d670/943ec00c75b84cb39c3d21e322949ae5/FLAG42a528580 [2020-08-19 06:01:15,635 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:01:15,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test21-1.c [2020-08-19 06:01:15,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b519d670/943ec00c75b84cb39c3d21e322949ae5/FLAG42a528580 [2020-08-19 06:01:16,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b519d670/943ec00c75b84cb39c3d21e322949ae5 [2020-08-19 06:01:16,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:01:16,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:01:16,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:01:16,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:01:16,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:01:16,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7decd891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16, skipping insertion in model container [2020-08-19 06:01:16,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:01:16,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:01:16,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:01:16,263 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:01:16,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:01:16,295 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:01:16,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16 WrapperNode [2020-08-19 06:01:16,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:01:16,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:01:16,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:01:16,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:01:16,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (1/1) ... [2020-08-19 06:01:16,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:01:16,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:01:16,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:01:16,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:01:16,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (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 06:01:16,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:01:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:01:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-19 06:01:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-08-19 06:01:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-19 06:01:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:01:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:01:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:01:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 06:01:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 06:01:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:01:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-08-19 06:01:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 06:01:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:01:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:01:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:01:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:01:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:01:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:01:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:01:16,728 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:01:16,729 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 06:01:16,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:01:16 BoogieIcfgContainer [2020-08-19 06:01:16,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:01:16,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:01:16,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:01:16,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:01:16,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:01:16" (1/3) ... [2020-08-19 06:01:16,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102333a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:01:16, skipping insertion in model container [2020-08-19 06:01:16,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:01:16" (2/3) ... [2020-08-19 06:01:16,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102333a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:01:16, skipping insertion in model container [2020-08-19 06:01:16,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:01:16" (3/3) ... [2020-08-19 06:01:16,749 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-1.c [2020-08-19 06:01:16,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:01:16,789 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:01:16,819 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:01:16,845 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:01:16,845 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:01:16,845 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:01:16,846 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:01:16,846 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:01:16,846 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:01:16,846 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:01:16,846 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:01:16,865 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-08-19 06:01:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-19 06:01:16,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:01:16,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:01:16,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:01:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:01:16,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times [2020-08-19 06:01:16,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:01:16,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100271743] [2020-08-19 06:01:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:01:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:01:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:01:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:01:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:01:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:01:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:01:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:01:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:01:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:01:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:01:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:01:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:01:17,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100271743] [2020-08-19 06:01:17,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:01:17,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:01:17,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988358074] [2020-08-19 06:01:17,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:01:17,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:01:17,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:01:17,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:01:17,480 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 12 states. [2020-08-19 06:01:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:01:18,452 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-08-19 06:01:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:01:18,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-08-19 06:01:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:01:18,462 INFO L225 Difference]: With dead ends: 56 [2020-08-19 06:01:18,463 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 06:01:18,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:01:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 06:01:18,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 06:01:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 06:01:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 06:01:18,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-08-19 06:01:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:01:18,489 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 06:01:18,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:01:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 06:01:18,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 06:01:18,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:01:18,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 06:01:18,669 INFO L268 CegarLoopResult]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2020-08-19 06:01:18,670 INFO L264 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-19 06:01:18,670 INFO L268 CegarLoopResult]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2020-08-19 06:01:18,670 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 06:01:18,670 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |old(#length)| |#length|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |old(~#d2~0.base)| |~#d2~0.base|)) [2020-08-19 06:01:18,671 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:01:18,671 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2020-08-19 06:01:18,671 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2020-08-19 06:01:18,671 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-08-19 06:01:18,671 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2020-08-19 06:01:18,671 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:01:18,672 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 06:01:18,672 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 06:01:18,672 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 06:01:18,672 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-19 06:01:18,672 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2020-08-19 06:01:18,673 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-08-19 06:01:18,673 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-08-19 06:01:18,673 INFO L268 CegarLoopResult]: For program point L34-2(lines 34 38) no Hoare annotation was computed. [2020-08-19 06:01:18,673 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-19 06:01:18,674 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-08-19 06:01:18,674 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 30 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-19 06:01:18,674 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 30 44) no Hoare annotation was computed. [2020-08-19 06:01:18,674 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 30 44) no Hoare annotation was computed. [2020-08-19 06:01:18,674 INFO L264 CegarLoopResult]: At program point L36(lines 31 44) the Hoare annotation is: false [2020-08-19 06:01:18,675 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-08-19 06:01:18,675 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-08-19 06:01:18,675 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-08-19 06:01:18,675 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2020-08-19 06:01:18,675 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2020-08-19 06:01:18,676 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2020-08-19 06:01:18,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:01:18 BoogieIcfgContainer [2020-08-19 06:01:18,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:01:18,691 INFO L168 Benchmark]: Toolchain (without parser) took 2667.92 ms. Allocated memory was 147.3 MB in the beginning and 236.5 MB in the end (delta: 89.1 MB). Free memory was 102.3 MB in the beginning and 114.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:01:18,692 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:01:18,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.59 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 91.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:01:18,695 INFO L168 Benchmark]: Boogie Preprocessor took 121.01 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 180.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:01:18,696 INFO L168 Benchmark]: RCFGBuilder took 317.76 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 163.4 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:01:18,697 INFO L168 Benchmark]: TraceAbstraction took 1951.77 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 163.4 MB in the beginning and 114.4 MB in the end (delta: 49.0 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:01:18,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.59 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 91.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.01 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 180.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 317.76 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 163.4 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1951.77 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 163.4 MB in the beginning and 114.4 MB in the end (delta: 49.0 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 45 SDslu, 55 SDs, 0 SdLazy, 244 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 11 LocationsWithAnnotation, 14 PreInvPairs, 16 NumberOfFragments, 45 HoareAnnotationTreeSize, 14 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 179 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 4088 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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...