/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --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-c90d42b [2020-09-25 00:58:04,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:04,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:04,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:04,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:04,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:04,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:04,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:04,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:04,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:04,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:04,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:04,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:04,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:04,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:04,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:04,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:04,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:04,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:04,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:04,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:04,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:04,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:04,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:04,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:04,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:04,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:04,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:04,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:04,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-25 00:58:04,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:04,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:04,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:04,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:58:04,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:04,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:04,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:04,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:04,603 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:04,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:04,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:04,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:04,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:04,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:04,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:04,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:04,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:04,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:04,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:04,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:04,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:04,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:04,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:04,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:04,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:04,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:04,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:04,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:04,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:04,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:04,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:04,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:04,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:04,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:58:05,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:05,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:05,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:05,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:05,111 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:05,112 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c [2020-09-25 00:58:05,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a581cb3ce/2fa0f0fb335a4d73bafd67096e317499/FLAGe5f5395b9 [2020-09-25 00:58:05,693 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:05,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test13.c [2020-09-25 00:58:05,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a581cb3ce/2fa0f0fb335a4d73bafd67096e317499/FLAGe5f5395b9 [2020-09-25 00:58:06,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a581cb3ce/2fa0f0fb335a4d73bafd67096e317499 [2020-09-25 00:58:06,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:06,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:06,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:06,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:06,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:06,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424943e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06, skipping insertion in model container [2020-09-25 00:58:06,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:06,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:06,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:06,341 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:06,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:06,391 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:06,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06 WrapperNode [2020-09-25 00:58:06,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:06,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:06,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:06,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:06,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ... [2020-09-25 00:58:06,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:06,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:06,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:06,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:06,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 00:58:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:58:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:58:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 00:58:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:58:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:58:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:06,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:06,828 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:58:06,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:06 BoogieIcfgContainer [2020-09-25 00:58:06,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:06,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:06,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:06,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:06,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:06" (1/3) ... [2020-09-25 00:58:06,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd5ba47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:06, skipping insertion in model container [2020-09-25 00:58:06,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (2/3) ... [2020-09-25 00:58:06,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd5ba47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:06, skipping insertion in model container [2020-09-25 00:58:06,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:06" (3/3) ... [2020-09-25 00:58:06,846 INFO L109 eAbstractionObserver]: Analyzing ICFG test13.c [2020-09-25 00:58:06,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:06,869 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:58:06,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:58:06,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:06,928 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:06,928 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:06,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:06,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:06,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:06,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:06,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-25 00:58:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 00:58:06,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:06,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:06,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:06,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:06,972 INFO L82 PathProgramCache]: Analyzing trace with hash 437013475, now seen corresponding path program 1 times [2020-09-25 00:58:06,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:06,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837497075] [2020-09-25 00:58:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:07,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:07,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:07,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 00:58:07,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:07,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-25 00:58:07,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:58:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 00:58:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 00:58:07,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:58:07,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:07,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:07,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 00:58:07,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 00:58:07,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:58:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:07,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837497075] [2020-09-25 00:58:07,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:07,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:58:07,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491519020] [2020-09-25 00:58:07,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:58:07,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:07,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:58:07,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:58:07,844 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-09-25 00:58:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:08,190 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2020-09-25 00:58:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:58:08,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-25 00:58:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:08,202 INFO L225 Difference]: With dead ends: 33 [2020-09-25 00:58:08,202 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:58:08,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:58:08,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:58:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:58:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:58:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:58:08,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-25 00:58:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:08,232 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:58:08,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:58:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:58:08,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:58:08,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:58:08,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:58:08,369 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 00:58:08,370 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 00:58:08,370 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 00:58:08,370 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 00:58:08,370 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:58:08,370 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 00:58:08,370 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 00:58:08,371 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-25 00:58:08,371 INFO L268 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-09-25 00:58:08,371 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|)) [2020-09-25 00:58:08,371 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:58:08,372 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:58:08,372 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|)) [2020-09-25 00:58:08,372 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:58:08,372 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:58:08,372 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 20) the Hoare annotation is: true [2020-09-25 00:58:08,372 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 20) no Hoare annotation was computed. [2020-09-25 00:58:08,373 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 20) no Hoare annotation was computed. [2020-09-25 00:58:08,373 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 00:58:08,373 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 4 12) the Hoare annotation is: true [2020-09-25 00:58:08,373 INFO L268 CegarLoopResult]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-09-25 00:58:08,373 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 4 12) no Hoare annotation was computed. [2020-09-25 00:58:08,374 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|))) [2020-09-25 00:58:08,374 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-25 00:58:08,374 INFO L268 CegarLoopResult]: For program point L4(lines 4 12) no Hoare annotation was computed. [2020-09-25 00:58:08,374 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 4 12) no Hoare annotation was computed. [2020-09-25 00:58:08,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:58:08 BoogieIcfgContainer [2020-09-25 00:58:08,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:58:08,399 INFO L168 Benchmark]: Toolchain (without parser) took 2333.76 ms. Allocated memory was 147.8 MB in the beginning and 234.4 MB in the end (delta: 86.5 MB). Free memory was 103.0 MB in the beginning and 175.6 MB in the end (delta: -72.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:08,400 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 00:58:08,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.96 ms. Allocated memory is still 147.8 MB. Free memory was 102.4 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:08,403 INFO L168 Benchmark]: Boogie Preprocessor took 117.30 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 92.9 MB in the beginning and 183.5 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:08,404 INFO L168 Benchmark]: RCFGBuilder took 323.87 ms. Allocated memory is still 205.0 MB. Free memory was 183.5 MB in the beginning and 168.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:08,405 INFO L168 Benchmark]: TraceAbstraction took 1560.01 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 168.9 MB in the beginning and 175.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:08,409 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 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.96 ms. Allocated memory is still 147.8 MB. Free memory was 102.4 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.30 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 92.9 MB in the beginning and 183.5 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 323.87 ms. Allocated memory is still 205.0 MB. Free memory was 183.5 MB in the beginning and 168.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1560.01 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 168.9 MB in the beginning and 175.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 22.6 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, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 52 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0.6s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1717 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...