/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:11:40,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:11:40,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:11:40,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:11:40,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:11:40,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:11:40,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:11:40,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:11:40,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:11:40,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:11:40,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:11:40,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:11:40,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:11:40,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:11:40,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:11:40,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:11:40,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:11:40,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:11:40,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:11:40,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:11:40,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:11:40,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:11:40,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:11:40,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:11:40,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:11:40,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:11:40,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:11:40,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:11:40,409 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 [2020-08-21 22:11:40,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:11:40,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:11:40,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:11:40,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:11:40,434 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:11:40,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:11:40,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:11:40,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:11:40,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:11:40,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:11:40,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:11:40,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:11:40,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:11:40,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:11:40,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:11:40,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:11:40,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:11:40,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:11:40,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:11:40,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:11:40,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:11:40,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:11:40,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:11:40,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:11:40,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:11:40,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:11:40,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:11:40,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:11:40,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:11:40,439 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=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:11:40,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:11:40,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:11:40,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:11:40,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:11:40,757 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:11:40,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c [2020-08-21 22:11:40,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc04efa6c/322a0b29906641599f2aae6fd69e98a4/FLAG0e802926b [2020-08-21 22:11:41,275 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:11:41,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test13.c [2020-08-21 22:11:41,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc04efa6c/322a0b29906641599f2aae6fd69e98a4/FLAG0e802926b [2020-08-21 22:11:41,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc04efa6c/322a0b29906641599f2aae6fd69e98a4 [2020-08-21 22:11:41,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:11:41,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:11:41,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:41,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:11:41,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:11:41,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:41" (1/1) ... [2020-08-21 22:11:41,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31653048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:41, skipping insertion in model container [2020-08-21 22:11:41,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:41" (1/1) ... [2020-08-21 22:11:41,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:11:41,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:11:41,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:41,955 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:11:41,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:42,001 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:11:42,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42 WrapperNode [2020-08-21 22:11:42,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:42,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:11:42,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:11:42,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:11:42,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (1/1) ... [2020-08-21 22:11:42,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (1/1) ... [2020-08-21 22:11:42,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (1/1) ... [2020-08-21 22:11:42,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (1/1) ... [2020-08-21 22:11:42,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (1/1) ... [2020-08-21 22:11:42,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (1/1) ... [2020-08-21 22:11:42,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (1/1) ... [2020-08-21 22:11:42,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:11:42,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:11:42,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:11:42,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:11:42,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (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 [2020-08-21 22:11:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:11:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:11:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-21 22:11:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:11:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:11:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 22:11:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:11:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:11:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:11:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:11:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:11:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:11:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:11:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:11:42,373 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:11:42,374 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 22:11:42,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:42 BoogieIcfgContainer [2020-08-21 22:11:42,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:11:42,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:11:42,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:11:42,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:11:42,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:11:41" (1/3) ... [2020-08-21 22:11:42,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7233ff38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:42, skipping insertion in model container [2020-08-21 22:11:42,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:42" (2/3) ... [2020-08-21 22:11:42,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7233ff38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:42, skipping insertion in model container [2020-08-21 22:11:42,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:42" (3/3) ... [2020-08-21 22:11:42,386 INFO L109 eAbstractionObserver]: Analyzing ICFG test13.c [2020-08-21 22:11:42,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:11:42,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:11:42,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:11:42,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:11:42,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:11:42,471 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:11:42,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:11:42,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:11:42,471 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:11:42,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:11:42,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:11:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-21 22:11:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-08-21 22:11:42,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:42,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:42,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:42,516 INFO L82 PathProgramCache]: Analyzing trace with hash 562540648, now seen corresponding path program 1 times [2020-08-21 22:11:42,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:42,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436593272] [2020-08-21 22:11:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:42,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436593272] [2020-08-21 22:11:42,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:42,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:42,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898493675] [2020-08-21 22:11:42,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:11:42,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:42,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:11:42,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:42,940 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-08-21 22:11:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:43,261 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-08-21 22:11:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:11:43,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-08-21 22:11:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:43,271 INFO L225 Difference]: With dead ends: 24 [2020-08-21 22:11:43,271 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:11:43,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:11:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:11:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:11:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:11:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:11:43,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-08-21 22:11:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:43,309 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:11:43,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:11:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:11:43,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:11:43,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:11:43,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:11:43,491 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 22:11:43,492 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~pa~0.base |old(~pa~0.base)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-21 22:11:43,492 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:11:43,492 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:11:43,493 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-08-21 22:11:43,493 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 22:11:43,493 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 22:11:43,493 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 20) the Hoare annotation is: true [2020-08-21 22:11:43,494 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 20) no Hoare annotation was computed. [2020-08-21 22:11:43,494 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 20) no Hoare annotation was computed. [2020-08-21 22:11:43,494 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-21 22:11:43,494 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 4 12) the Hoare annotation is: true [2020-08-21 22:11:43,495 INFO L268 CegarLoopResult]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-08-21 22:11:43,495 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 4 12) no Hoare annotation was computed. [2020-08-21 22:11:43,495 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-08-21 22:11:43,495 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-21 22:11:43,496 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 4 12) no Hoare annotation was computed. [2020-08-21 22:11:43,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:11:43 BoogieIcfgContainer [2020-08-21 22:11:43,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:11:43,531 INFO L168 Benchmark]: Toolchain (without parser) took 1860.73 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 102.2 MB in the beginning and 96.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:43,534 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:11:43,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.61 ms. Allocated memory is still 140.5 MB. Free memory was 102.0 MB in the beginning and 92.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:43,537 INFO L168 Benchmark]: Boogie Preprocessor took 109.92 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 92.4 MB in the beginning and 180.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:43,539 INFO L168 Benchmark]: RCFGBuilder took 264.56 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 166.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:43,540 INFO L168 Benchmark]: TraceAbstraction took 1148.56 ms. Allocated memory is still 202.4 MB. Free memory was 166.2 MB in the beginning and 96.7 MB in the end (delta: 69.5 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:43,551 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.61 ms. Allocated memory is still 140.5 MB. Free memory was 102.0 MB in the beginning and 92.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.92 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 92.4 MB in the beginning and 180.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.56 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 166.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1148.56 ms. Allocated memory is still 202.4 MB. Free memory was 166.2 MB in the beginning and 96.7 MB in the end (delta: 69.5 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 4]: Loop Invariant Derived loop invariant: ((!(a == pa) || !(a == pa)) || !(b == a)) || !(a == b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 16 SDslu, 14 SDs, 0 SdLazy, 18 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s 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, 64 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 640 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...