/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_union_cast.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:42:47,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:42:47,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:42:47,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:42:47,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:42:47,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:42:47,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:42:47,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:42:47,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:42:47,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:42:47,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:42:47,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:42:47,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:42:47,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:42:47,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:42:47,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:42:47,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:42:47,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:42:47,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:42:47,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:42:47,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:42:47,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:42:47,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:42:47,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:42:47,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:42:47,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:42:47,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:42:47,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:42:47,456 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 [2020-08-18 18:42:47,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:42:47,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:42:47,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:42:47,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:42:47,485 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:42:47,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:42:47,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:42:47,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:42:47,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:42:47,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:42:47,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:42:47,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:42:47,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:42:47,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:42:47,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:42:47,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:42:47,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:42:47,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:42:47,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:42:47,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:42:47,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:42:47,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:42:47,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:42:47,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:42:47,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:42:47,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:42:47,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:42:47,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:42:47,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:42:47,493 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:42:47,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:42:47,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:42:47,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:42:47,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:42:47,834 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:42:47,835 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union_cast.c_1.i [2020-08-18 18:42:47,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5777ab138/4e253b9576b742499a1af2246bf1c708/FLAGb7013e4e8 [2020-08-18 18:42:48,382 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:42:48,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_union_cast.c_1.i [2020-08-18 18:42:48,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5777ab138/4e253b9576b742499a1af2246bf1c708/FLAGb7013e4e8 [2020-08-18 18:42:48,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5777ab138/4e253b9576b742499a1af2246bf1c708 [2020-08-18 18:42:48,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:42:48,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:42:48,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:42:48,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:42:48,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:42:48,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:42:48" (1/1) ... [2020-08-18 18:42:48,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:48, skipping insertion in model container [2020-08-18 18:42:48,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:42:48" (1/1) ... [2020-08-18 18:42:48,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:42:48,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:42:49,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:42:49,059 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:42:49,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:42:49,109 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:42:49,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49 WrapperNode [2020-08-18 18:42:49,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:42:49,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:42:49,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:42:49,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:42:49,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (1/1) ... [2020-08-18 18:42:49,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (1/1) ... [2020-08-18 18:42:49,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (1/1) ... [2020-08-18 18:42:49,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (1/1) ... [2020-08-18 18:42:49,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (1/1) ... [2020-08-18 18:42:49,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (1/1) ... [2020-08-18 18:42:49,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (1/1) ... [2020-08-18 18:42:49,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:42:49,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:42:49,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:42:49,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:42:49,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (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 [2020-08-18 18:42:49,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:42:49,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:42:49,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-18 18:42:49,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:42:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:42:49,335 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-18 18:42:49,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:42:49,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:42:49,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 18:42:49,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:42:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:42:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:42:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:42:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:42:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 18:42:49,531 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:42:49,532 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 18:42:49,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:42:49 BoogieIcfgContainer [2020-08-18 18:42:49,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:42:49,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:42:49,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:42:49,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:42:49,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:42:48" (1/3) ... [2020-08-18 18:42:49,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32970ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:42:49, skipping insertion in model container [2020-08-18 18:42:49,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:49" (2/3) ... [2020-08-18 18:42:49,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32970ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:42:49, skipping insertion in model container [2020-08-18 18:42:49,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:42:49" (3/3) ... [2020-08-18 18:42:49,544 INFO L109 eAbstractionObserver]: Analyzing ICFG test_union_cast.c_1.i [2020-08-18 18:42:49,555 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:42:49,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:42:49,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:42:49,609 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:42:49,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:42:49,610 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:42:49,610 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:42:49,610 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:42:49,610 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:42:49,611 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:42:49,611 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:42:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-18 18:42:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-08-18 18:42:49,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:42:49,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:42:49,651 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:42:49,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:42:49,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1215743292, now seen corresponding path program 1 times [2020-08-18 18:42:49,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:42:49,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990376977] [2020-08-18 18:42:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:42:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:42:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:42:49,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990376977] [2020-08-18 18:42:49,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:42:49,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:42:49,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687212342] [2020-08-18 18:42:49,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:42:49,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:42:50,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:42:50,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:42:50,008 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-08-18 18:42:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:42:50,061 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-08-18 18:42:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:42:50,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-08-18 18:42:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:42:50,070 INFO L225 Difference]: With dead ends: 22 [2020-08-18 18:42:50,070 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:42:50,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:42:50,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:42:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:42:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:42:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:42:50,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-08-18 18:42:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:42:50,100 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:42:50,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:42:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:42:50,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:42:50,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:42:50,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:42:50,169 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:42:50,169 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 18:42:50,170 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:42:50,170 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-18 18:42:50,170 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-18 18:42:50,170 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-18 18:42:50,171 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-08-18 18:42:50,171 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:42:50,171 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 18:42:50,172 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 18:42:50,172 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:42:50,172 INFO L264 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: false [2020-08-18 18:42:50,172 INFO L268 CegarLoopResult]: For program point L34-3(line 34) no Hoare annotation was computed. [2020-08-18 18:42:50,172 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 29 42) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-18 18:42:50,173 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 29 42) no Hoare annotation was computed. [2020-08-18 18:42:50,173 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 29 42) no Hoare annotation was computed. [2020-08-18 18:42:50,173 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-18 18:42:50,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:42:50 BoogieIcfgContainer [2020-08-18 18:42:50,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:42:50,183 INFO L168 Benchmark]: Toolchain (without parser) took 1424.46 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.6 MB in the beginning and 140.4 MB in the end (delta: -36.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:50,184 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:42:50,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.4 MB in the beginning and 93.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:50,186 INFO L168 Benchmark]: Boogie Preprocessor took 155.09 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 182.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:50,187 INFO L168 Benchmark]: RCFGBuilder took 267.96 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 169.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:50,188 INFO L168 Benchmark]: TraceAbstraction took 643.08 ms. Allocated memory is still 203.9 MB. Free memory was 169.0 MB in the beginning and 140.4 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:50,192 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.4 MB in the beginning and 93.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.09 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 182.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.96 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 169.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 643.08 ms. Allocated memory is still 203.9 MB. Free memory was 169.0 MB in the beginning and 140.4 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 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...