/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:21:08,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:21:08,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:21:08,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:21:08,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:21:08,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:21:08,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:21:08,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:21:08,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:21:08,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:21:08,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:21:08,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:21:08,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:21:08,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:21:08,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:21:08,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:21:08,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:21:08,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:21:08,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:21:08,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:21:08,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:21:08,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:21:08,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:21:08,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:21:08,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:21:08,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:21:08,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:21:08,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:21:08,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:21:08,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:21:08,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:21:08,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:21:08,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:21:08,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:21:08,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:21:08,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:21:08,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:21:08,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:21:08,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:21:08,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:21:08,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:21:09,000 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 [2020-09-24 17:21:09,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:21:09,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:21:09,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:21:09,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:21:09,043 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:21:09,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:21:09,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:21:09,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:21:09,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:21:09,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:21:09,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:21:09,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:21:09,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:21:09,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:21:09,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:21:09,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:21:09,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:21:09,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:21:09,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:21:09,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:21:09,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:21:09,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:21:09,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:21:09,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:21:09,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:21:09,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:21:09,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:21:09,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:21:09,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:21:09,049 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;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;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;log-additional-information=true; [2020-09-24 17:21:09,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:21:09,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:21:09,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:21:09,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:21:09,556 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:21:09,558 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-09-24 17:21:09,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e2212ea0/d6c00eb078dd494396d769bdf5d0abc7/FLAG1919449b0 [2020-09-24 17:21:10,210 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:21:10,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-09-24 17:21:10,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e2212ea0/d6c00eb078dd494396d769bdf5d0abc7/FLAG1919449b0 [2020-09-24 17:21:10,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e2212ea0/d6c00eb078dd494396d769bdf5d0abc7 [2020-09-24 17:21:10,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:21:10,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:21:10,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:21:10,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:21:10,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:21:10,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:10,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10, skipping insertion in model container [2020-09-24 17:21:10,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:10,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:21:10,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:21:10,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:21:10,831 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:21:10,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:21:10,873 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:21:10,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10 WrapperNode [2020-09-24 17:21:10,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:21:10,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:21:10,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:21:10,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:21:10,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:10,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:10,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:10,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:10,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:10,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:10,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (1/1) ... [2020-09-24 17:21:11,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:21:11,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:21:11,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:21:11,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:21:11,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (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 [2020-09-24 17:21:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:21:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:21:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:21:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:21:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:21:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:21:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:21:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:21:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:21:11,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:21:11,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:21:11,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:21:11,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:21:11,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:21:11,346 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:21:11,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:21:11 BoogieIcfgContainer [2020-09-24 17:21:11,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:21:11,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:21:11,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:21:11,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:21:11,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:21:10" (1/3) ... [2020-09-24 17:21:11,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e846e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:21:11, skipping insertion in model container [2020-09-24 17:21:11,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:10" (2/3) ... [2020-09-24 17:21:11,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e846e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:21:11, skipping insertion in model container [2020-09-24 17:21:11,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:21:11" (3/3) ... [2020-09-24 17:21:11,361 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-09-24 17:21:11,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:21:11,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:21:11,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:21:11,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:21:11,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:21:11,438 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:21:11,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:21:11,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:21:11,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:21:11,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:21:11,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:21:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-09-24 17:21:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 17:21:11,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:11,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:11,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:11,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2007421113, now seen corresponding path program 1 times [2020-09-24 17:21:11,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:11,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760360784] [2020-09-24 17:21:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:11,887 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:11,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 17:21:11,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:11,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 17:21:11,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:21:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:21:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:21:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:21:12,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:12,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:12,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:21:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:21:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:12,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:12,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760360784] [2020-09-24 17:21:12,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:12,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:21:12,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970704822] [2020-09-24 17:21:12,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:21:12,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:12,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:21:12,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:21:12,112 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2020-09-24 17:21:12,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:12,395 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2020-09-24 17:21:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:21:12,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 17:21:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:12,412 INFO L225 Difference]: With dead ends: 68 [2020-09-24 17:21:12,412 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 17:21:12,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:21:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 17:21:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-09-24 17:21:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 17:21:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-09-24 17:21:12,503 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 24 [2020-09-24 17:21:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:12,504 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-09-24 17:21:12,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:21:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-09-24 17:21:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 17:21:12,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:12,508 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:12,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:21:12,509 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:12,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:12,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1994781074, now seen corresponding path program 1 times [2020-09-24 17:21:12,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:12,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707080397] [2020-09-24 17:21:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:13,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:21:13,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:21:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-09-24 17:21:13,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:21:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:21:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 17:21:13,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:13,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:13,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:13,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:21:13,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:13,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:21:13,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:13,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:13,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 17:21:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:13,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:13,345 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:13,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:21:13,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:13,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:21:13,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:21:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:21:13,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:13,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707080397] [2020-09-24 17:21:13,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:13,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:21:13,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810030085] [2020-09-24 17:21:13,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:21:13,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:13,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:21:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:21:13,360 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 8 states. [2020-09-24 17:21:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:13,481 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-24 17:21:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:21:13,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-09-24 17:21:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:13,484 INFO L225 Difference]: With dead ends: 46 [2020-09-24 17:21:13,484 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 17:21:13,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:21:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 17:21:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 17:21:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 17:21:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 17:21:13,497 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 29 [2020-09-24 17:21:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:13,497 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 17:21:13,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:21:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 17:21:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 17:21:13,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:13,499 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:13,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:21:13,499 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:13,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1065397402, now seen corresponding path program 1 times [2020-09-24 17:21:13,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:13,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089872852] [2020-09-24 17:21:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:14,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:14,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:21:14,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:21:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-09-24 17:21:14,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:21:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:21:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 17:21:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:14,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:14,186 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:14,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:21:14,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:21:14,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 17:21:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:14,207 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:14,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:21:14,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:21:14,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:21:14,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:21:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:21:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:14,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:21:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:14,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:14,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:21:14,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:21:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:21:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:21:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 17:21:14,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089872852] [2020-09-24 17:21:14,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:14,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:21:14,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492470708] [2020-09-24 17:21:14,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:21:14,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:14,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:21:14,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:21:14,238 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 8 states. [2020-09-24 17:21:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:14,353 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-24 17:21:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:21:14,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-24 17:21:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:14,357 INFO L225 Difference]: With dead ends: 48 [2020-09-24 17:21:14,358 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 17:21:14,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:21:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 17:21:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 17:21:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 17:21:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-24 17:21:14,368 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 38 [2020-09-24 17:21:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:14,369 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-24 17:21:14,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:21:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-24 17:21:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 17:21:14,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:14,371 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:14,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:21:14,372 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:14,372 INFO L82 PathProgramCache]: Analyzing trace with hash 470853039, now seen corresponding path program 2 times [2020-09-24 17:21:14,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:14,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731885233] [2020-09-24 17:21:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:15,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:15,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 17:21:15,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:21:15,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-24 17:21:15,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:21:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:21:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 17:21:15,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:15,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:15,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:15,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:21:15,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:15,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:21:15,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:15,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 17:21:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:15,124 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:15,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:21:15,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:21:15,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:21:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:21:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:15,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:21:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:15,146 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:15,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:21:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:21:15,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:21:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:21:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:21:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:15,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:15,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:21:15,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:21:15,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:21:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:21:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 17:21:15,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731885233] [2020-09-24 17:21:15,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:21:15,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 17:21:15,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147359508] [2020-09-24 17:21:15,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:21:15,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:15,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:21:15,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:21:15,178 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 8 states. [2020-09-24 17:21:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:15,310 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-24 17:21:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:21:15,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-24 17:21:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:15,313 INFO L225 Difference]: With dead ends: 46 [2020-09-24 17:21:15,313 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:21:15,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:21:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:21:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:21:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:21:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:21:15,317 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-09-24 17:21:15,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:15,317 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:21:15,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:21:15,318 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:21:15,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:21:15,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:21:15,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:21:15,569 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 17:21:15,569 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:21:15,570 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:21:15,570 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:21:15,570 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:21:15,570 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:21:15,570 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:21:15,570 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:21:15,571 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 17:21:15,571 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 17:21:15,571 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:21:15,572 INFO L271 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-09-24 17:21:15,572 INFO L268 CegarLoopResult]: For program point L31(lines 27 32) no Hoare annotation was computed. [2020-09-24 17:21:15,572 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 17:21:15,572 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 17:21:15,572 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 17:21:15,572 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 17:21:15,572 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 34) no Hoare annotation was computed. [2020-09-24 17:21:15,573 INFO L264 CegarLoopResult]: At program point L27-3(lines 27 32) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-09-24 17:21:15,573 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 17:21:15,573 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 17:21:15,573 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 17:21:15,573 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 17:21:15,573 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 17:21:15,574 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 34) no Hoare annotation was computed. [2020-09-24 17:21:15,574 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-09-24 17:21:15,576 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 34) the Hoare annotation is: true [2020-09-24 17:21:15,576 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-09-24 17:21:15,576 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 17:21:15,576 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 17:21:15,577 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 17:21:15,577 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 17:21:15,578 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 17:21:15,578 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 17:21:15,578 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 17:21:15,578 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 17:21:15,578 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 17:21:15,578 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 17:21:15,579 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 17:21:15,579 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 17:21:15,579 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 17:21:15,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:21:15 BoogieIcfgContainer [2020-09-24 17:21:15,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:21:15,607 INFO L168 Benchmark]: Toolchain (without parser) took 5039.38 ms. Allocated memory was 148.4 MB in the beginning and 243.3 MB in the end (delta: 94.9 MB). Free memory was 103.8 MB in the beginning and 108.9 MB in the end (delta: -5.1 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:21:15,608 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:21:15,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.76 ms. Allocated memory is still 148.4 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:21:15,610 INFO L168 Benchmark]: Boogie Preprocessor took 142.90 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 93.7 MB in the beginning and 184.9 MB in the end (delta: -91.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:21:15,611 INFO L168 Benchmark]: RCFGBuilder took 331.39 ms. Allocated memory is still 205.0 MB. Free memory was 184.9 MB in the beginning and 170.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-09-24 17:21:15,612 INFO L168 Benchmark]: TraceAbstraction took 4250.36 ms. Allocated memory was 205.0 MB in the beginning and 243.3 MB in the end (delta: 38.3 MB). Free memory was 169.6 MB in the beginning and 108.9 MB in the end (delta: 60.7 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:21:15,617 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.76 ms. Allocated memory is still 148.4 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.90 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 93.7 MB in the beginning and 184.9 MB in the end (delta: -91.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.39 ms. Allocated memory is still 205.0 MB. Free memory was 184.9 MB in the beginning and 170.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4250.36 ms. Allocated memory was 205.0 MB in the beginning and 243.3 MB in the end (delta: 38.3 MB). Free memory was 169.6 MB in the beginning and 108.9 MB in the end (delta: 60.7 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((1 <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) && pathbuf_off == 0) && glob2_pathbuf_off == 0) && bound_off <= MAXPATHLEN - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 111 SDslu, 472 SDs, 0 SdLazy, 189 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=3, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 69 HoareAnnotationTreeSize, 14 FomulaSimplifications, 144 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 8416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 31/33 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...