/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -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 01:58:44,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:58:44,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:58:44,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:58:44,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:58:44,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:58:44,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:58:44,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:58:44,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:58:44,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:58:44,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:58:44,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:58:44,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:58:44,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:58:44,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:58:44,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:58:44,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:58:44,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:58:44,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:58:44,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:58:44,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:58:44,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:58:44,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:58:44,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:58:44,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:58:44,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:58:44,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:58:44,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:58:44,647 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 01:58:44,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:58:44,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:58:44,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:58:44,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:58:44,668 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:58:44,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:58:44,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:58:44,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:58:44,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:58:44,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:58:44,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:58:44,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:58:44,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:58:44,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:58:44,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:58:44,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:58:44,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:58:44,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:58:44,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:58:44,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:58:44,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:58:44,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:58:44,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:58:44,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:58:44,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:58:44,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:58:44,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:58:44,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:58:44,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:58:44,673 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:58:44,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:58:44,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:58:44,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:58:44,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:58:44,981 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:58:44,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2020-08-19 01:58:45,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bf9b4f2d/e20dbe77f75f4bec8bccf9f68b512f06/FLAGfcd936723 [2020-08-19 01:58:45,510 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:58:45,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test21-1.c [2020-08-19 01:58:45,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bf9b4f2d/e20dbe77f75f4bec8bccf9f68b512f06/FLAGfcd936723 [2020-08-19 01:58:45,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bf9b4f2d/e20dbe77f75f4bec8bccf9f68b512f06 [2020-08-19 01:58:45,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:58:45,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:58:45,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:58:45,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:58:45,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:58:45,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:58:45" (1/1) ... [2020-08-19 01:58:45,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ec4e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:45, skipping insertion in model container [2020-08-19 01:58:45,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:58:45" (1/1) ... [2020-08-19 01:58:45,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:58:45,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:58:46,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:58:46,135 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:58:46,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:58:46,174 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:58:46,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46 WrapperNode [2020-08-19 01:58:46,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:58:46,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:58:46,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:58:46,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:58:46,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (1/1) ... [2020-08-19 01:58:46,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (1/1) ... [2020-08-19 01:58:46,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (1/1) ... [2020-08-19 01:58:46,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (1/1) ... [2020-08-19 01:58:46,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (1/1) ... [2020-08-19 01:58:46,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (1/1) ... [2020-08-19 01:58:46,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (1/1) ... [2020-08-19 01:58:46,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:58:46,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:58:46,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:58:46,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:58:46,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (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 01:58:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:58:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:58:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-19 01:58:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-08-19 01:58:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-19 01:58:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:58:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:58:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:58:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 01:58:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 01:58:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:58:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-08-19 01:58:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 01:58:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:58:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:58:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:58:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:58:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:58:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:58:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:58:46,597 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:58:46,598 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 01:58:46,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:58:46 BoogieIcfgContainer [2020-08-19 01:58:46,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:58:46,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:58:46,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:58:46,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:58:46,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:58:45" (1/3) ... [2020-08-19 01:58:46,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0ade05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:58:46, skipping insertion in model container [2020-08-19 01:58:46,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:46" (2/3) ... [2020-08-19 01:58:46,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0ade05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:58:46, skipping insertion in model container [2020-08-19 01:58:46,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:58:46" (3/3) ... [2020-08-19 01:58:46,628 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-1.c [2020-08-19 01:58:46,649 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:58:46,660 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:58:46,673 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:58:46,697 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:58:46,697 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:58:46,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:58:46,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:58:46,698 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:58:46,698 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:58:46,698 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:58:46,698 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:58:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-08-19 01:58:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-19 01:58:46,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:46,729 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 01:58:46,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:46,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times [2020-08-19 01:58:46,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:46,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867834076] [2020-08-19 01:58:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:47,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:47,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:58:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:47,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:47,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:58:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:58:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:47,297 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 01:58:47,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867834076] [2020-08-19 01:58:47,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:47,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:58:47,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728214175] [2020-08-19 01:58:47,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:58:47,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:47,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:58:47,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:58:47,323 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 12 states. [2020-08-19 01:58:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:48,045 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-08-19 01:58:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:58:48,047 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-08-19 01:58:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:48,054 INFO L225 Difference]: With dead ends: 56 [2020-08-19 01:58:48,055 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:58:48,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:58:48,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:58:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:58:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:58:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:58:48,086 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-08-19 01:58:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:48,087 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:58:48,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:58:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:58:48,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:58:48,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:58:48,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:58:48,267 INFO L268 CegarLoopResult]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2020-08-19 01:58:48,267 INFO L264 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-19 01:58:48,268 INFO L268 CegarLoopResult]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2020-08-19 01:58:48,268 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:58:48,268 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 01:58:48,268 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:58:48,268 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2020-08-19 01:58:48,269 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2020-08-19 01:58:48,269 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-08-19 01:58:48,269 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2020-08-19 01:58:48,269 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:58:48,269 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 01:58:48,270 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:58:48,270 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:58:48,270 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-19 01:58:48,270 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2020-08-19 01:58:48,271 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-08-19 01:58:48,271 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-08-19 01:58:48,271 INFO L268 CegarLoopResult]: For program point L34-2(lines 34 38) no Hoare annotation was computed. [2020-08-19 01:58:48,271 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-19 01:58:48,272 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-08-19 01:58:48,272 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 30 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-19 01:58:48,272 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 30 44) no Hoare annotation was computed. [2020-08-19 01:58:48,272 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 30 44) no Hoare annotation was computed. [2020-08-19 01:58:48,273 INFO L264 CegarLoopResult]: At program point L36(lines 31 44) the Hoare annotation is: false [2020-08-19 01:58:48,273 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 01:58:48,273 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-08-19 01:58:48,273 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-08-19 01:58:48,273 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2020-08-19 01:58:48,274 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2020-08-19 01:58:48,274 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2020-08-19 01:58:48,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:58:48 BoogieIcfgContainer [2020-08-19 01:58:48,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:58:48,290 INFO L168 Benchmark]: Toolchain (without parser) took 2396.37 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 103.7 MB in the beginning and 108.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:48,291 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 01:58:48,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.27 ms. Allocated memory is still 141.0 MB. Free memory was 103.7 MB in the beginning and 93.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:48,293 INFO L168 Benchmark]: Boogie Preprocessor took 113.60 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 180.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:48,294 INFO L168 Benchmark]: RCFGBuilder took 312.97 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 164.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:48,295 INFO L168 Benchmark]: TraceAbstraction took 1682.95 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 163.2 MB in the beginning and 108.3 MB in the end (delta: 54.9 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:48,300 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.27 ms. Allocated memory is still 141.0 MB. Free memory was 103.7 MB in the beginning and 93.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.60 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 180.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 312.97 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 164.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1682.95 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 163.2 MB in the beginning and 108.3 MB in the end (delta: 54.9 MB). Peak memory consumption was 85.9 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: 1.3s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.7s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s 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, 0.3s 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...