/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:00:04,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:00:04,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:00:04,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:00:04,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:00:04,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:00:04,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:00:04,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:00:04,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:00:04,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:00:04,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:00:04,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:00:04,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:00:04,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:00:04,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:00:04,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:00:04,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:00:04,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:00:04,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:00:04,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:00:04,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:00:04,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:00:04,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:00:04,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:00:04,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:00:04,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:00:04,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:00:04,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:00:04,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:00:04,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:00:04,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:00:04,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:00:04,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:00:04,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:00:04,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:00:04,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:00:04,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:00:04,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:00:04,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:00:04,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:00:05,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:00:05,001 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 [2020-10-12 21:00:05,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:00:05,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:00:05,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:00:05,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:00:05,039 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:00:05,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:00:05,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:00:05,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:00:05,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:00:05,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:00:05,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:00:05,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:00:05,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:00:05,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:00:05,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:00:05,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:00:05,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:00:05,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:00:05,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:00:05,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:00:05,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:00:05,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:00:05,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:00:05,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:00:05,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:00:05,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:00:05,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:00:05,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:00:05,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:00:05,045 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 21:00:05,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:00:05,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:00:05,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:00:05,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:00:05,377 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:00:05,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-10-12 21:00:05,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9071e083/563a560307aa41dbab2161378bf8a1b6/FLAG9cf73813b [2020-10-12 21:00:05,850 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:00:05,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-10-12 21:00:05,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9071e083/563a560307aa41dbab2161378bf8a1b6/FLAG9cf73813b [2020-10-12 21:00:06,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9071e083/563a560307aa41dbab2161378bf8a1b6 [2020-10-12 21:00:06,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:00:06,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:00:06,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:00:06,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:00:06,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:00:06,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41238cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06, skipping insertion in model container [2020-10-12 21:00:06,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:00:06,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:00:06,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:00:06,442 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:00:06,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:00:06,474 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:00:06,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06 WrapperNode [2020-10-12 21:00:06,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:00:06,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:00:06,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:00:06,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:00:06,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (1/1) ... [2020-10-12 21:00:06,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:00:06,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:00:06,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:00:06,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:00:06,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (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 [2020-10-12 21:00:06,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:00:06,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:00:06,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:00:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:00:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 21:00:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:00:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 21:00:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:00:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:00:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:00:06,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:00:06,880 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 21:00:06,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:00:06 BoogieIcfgContainer [2020-10-12 21:00:06,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:00:06,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:00:06,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:00:06,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:00:06,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:00:06" (1/3) ... [2020-10-12 21:00:06,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a137c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:00:06, skipping insertion in model container [2020-10-12 21:00:06,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:06" (2/3) ... [2020-10-12 21:00:06,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a137c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:00:06, skipping insertion in model container [2020-10-12 21:00:06,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:00:06" (3/3) ... [2020-10-12 21:00:06,891 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2020-10-12 21:00:06,902 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:00:06,909 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:00:06,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:00:06,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:00:06,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:00:06,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:00:06,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:00:06,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:00:06,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:00:06,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:00:06,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:00:06,985 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-12 21:00:06,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-12 21:00:06,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:06,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:06,993 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:06,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2020-10-12 21:00:07,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:07,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52628991] [2020-10-12 21:00:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 21:00:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 21:00:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 21:00:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 21:00:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:07,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:07,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:07,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:00:07,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52628991] [2020-10-12 21:00:07,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:07,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:07,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227559566] [2020-10-12 21:00:07,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:07,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:07,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:07,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:07,263 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-10-12 21:00:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:07,408 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-10-12 21:00:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:07,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-12 21:00:07,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:07,424 INFO L225 Difference]: With dead ends: 70 [2020-10-12 21:00:07,424 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 21:00:07,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:07,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 21:00:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-12 21:00:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 21:00:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-10-12 21:00:07,491 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2020-10-12 21:00:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:07,491 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-10-12 21:00:07,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-10-12 21:00:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 21:00:07,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:07,494 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:07,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:00:07,495 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:07,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:07,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2020-10-12 21:00:07,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:07,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319459423] [2020-10-12 21:00:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:07,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 21:00:07,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:00:07,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 21:00:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 21:00:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 21:00:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 21:00:07,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:07,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:07,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:00:07,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:00:07,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319459423] [2020-10-12 21:00:07,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:07,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:07,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513120262] [2020-10-12 21:00:07,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:07,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:07,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:07,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:07,688 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-10-12 21:00:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:07,747 INFO L93 Difference]: Finished difference Result 73 states and 110 transitions. [2020-10-12 21:00:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:07,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-12 21:00:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:07,750 INFO L225 Difference]: With dead ends: 73 [2020-10-12 21:00:07,750 INFO L226 Difference]: Without dead ends: 55 [2020-10-12 21:00:07,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-12 21:00:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-12 21:00:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 21:00:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2020-10-12 21:00:07,762 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 13 [2020-10-12 21:00:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:07,763 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2020-10-12 21:00:07,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2020-10-12 21:00:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 21:00:07,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:07,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:07,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:00:07,765 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:07,766 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2020-10-12 21:00:07,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:07,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253214306] [2020-10-12 21:00:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 21:00:07,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:07,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 21:00:07,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 21:00:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 21:00:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:07,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:00:07,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 21:00:07,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253214306] [2020-10-12 21:00:07,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:07,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:07,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212041010] [2020-10-12 21:00:07,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:07,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:07,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:07,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:07,829 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand 3 states. [2020-10-12 21:00:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:07,878 INFO L93 Difference]: Finished difference Result 107 states and 157 transitions. [2020-10-12 21:00:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:07,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-12 21:00:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:07,881 INFO L225 Difference]: With dead ends: 107 [2020-10-12 21:00:07,881 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 21:00:07,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:07,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 21:00:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-12 21:00:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 21:00:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 103 transitions. [2020-10-12 21:00:07,895 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 103 transitions. Word has length 20 [2020-10-12 21:00:07,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:07,895 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 103 transitions. [2020-10-12 21:00:07,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 103 transitions. [2020-10-12 21:00:07,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 21:00:07,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:07,897 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:07,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:00:07,898 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:07,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:07,898 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2020-10-12 21:00:07,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:07,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581882789] [2020-10-12 21:00:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 21:00:07,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 21:00:07,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 21:00:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 21:00:07,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:08,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:08,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:08,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:00:08,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 21:00:08,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581882789] [2020-10-12 21:00:08,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:08,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:08,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664839724] [2020-10-12 21:00:08,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:08,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:08,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:08,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:08,027 INFO L87 Difference]: Start difference. First operand 71 states and 103 transitions. Second operand 3 states. [2020-10-12 21:00:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:08,097 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2020-10-12 21:00:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:08,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-12 21:00:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:08,099 INFO L225 Difference]: With dead ends: 141 [2020-10-12 21:00:08,100 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 21:00:08,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 21:00:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-12 21:00:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 21:00:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2020-10-12 21:00:08,111 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 23 [2020-10-12 21:00:08,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:08,111 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2020-10-12 21:00:08,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-10-12 21:00:08,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 21:00:08,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:08,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:08,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:00:08,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:08,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2020-10-12 21:00:08,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:08,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562570698] [2020-10-12 21:00:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:08,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 21:00:08,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 21:00:08,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 21:00:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:00:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:08,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:08,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:08,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:08,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:08,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:00:08,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:08,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562570698] [2020-10-12 21:00:08,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:08,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:08,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487300926] [2020-10-12 21:00:08,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:08,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:08,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:08,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:08,289 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand 3 states. [2020-10-12 21:00:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:08,323 INFO L93 Difference]: Finished difference Result 95 states and 122 transitions. [2020-10-12 21:00:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:08,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-12 21:00:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:08,325 INFO L225 Difference]: With dead ends: 95 [2020-10-12 21:00:08,325 INFO L226 Difference]: Without dead ends: 69 [2020-10-12 21:00:08,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-12 21:00:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-12 21:00:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 21:00:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-10-12 21:00:08,335 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 37 [2020-10-12 21:00:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:08,336 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-10-12 21:00:08,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-10-12 21:00:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 21:00:08,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:08,338 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:08,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 21:00:08,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:08,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:08,339 INFO L82 PathProgramCache]: Analyzing trace with hash 970856213, now seen corresponding path program 1 times [2020-10-12 21:00:08,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:08,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477347952] [2020-10-12 21:00:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:08,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 21:00:08,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 21:00:08,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 21:00:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 21:00:08,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:08,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:08,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:00:08,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 21:00:08,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477347952] [2020-10-12 21:00:08,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:08,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:08,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686173153] [2020-10-12 21:00:08,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:08,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:08,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:08,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:08,482 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 3 states. [2020-10-12 21:00:08,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:08,499 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2020-10-12 21:00:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:08,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-10-12 21:00:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:08,500 INFO L225 Difference]: With dead ends: 109 [2020-10-12 21:00:08,500 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 21:00:08,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 21:00:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 21:00:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 21:00:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 21:00:08,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-10-12 21:00:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:08,502 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 21:00:08,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 21:00:08,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 21:00:08,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 21:00:08,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 21:00:08,634 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 21:00:08,634 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 21:00:08,634 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 21:00:08,634 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 21:00:08,634 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 21:00:08,634 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 21:00:08,635 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 140) no Hoare annotation was computed. [2020-10-12 21:00:08,635 INFO L268 CegarLoopResult]: For program point L77-1(lines 53 106) no Hoare annotation was computed. [2020-10-12 21:00:08,635 INFO L268 CegarLoopResult]: For program point L69(lines 69 73) no Hoare annotation was computed. [2020-10-12 21:00:08,635 INFO L268 CegarLoopResult]: For program point L24(lines 24 127) no Hoare annotation was computed. [2020-10-12 21:00:08,635 INFO L268 CegarLoopResult]: For program point L57-1(lines 53 106) no Hoare annotation was computed. [2020-10-12 21:00:08,635 INFO L268 CegarLoopResult]: For program point L49(lines 49 108) no Hoare annotation was computed. [2020-10-12 21:00:08,635 INFO L268 CegarLoopResult]: For program point L45(lines 45 110) no Hoare annotation was computed. [2020-10-12 21:00:08,636 INFO L271 CegarLoopResult]: At program point L136(lines 8 140) the Hoare annotation is: true [2020-10-12 21:00:08,636 INFO L264 CegarLoopResult]: At program point L99(lines 17 134) the Hoare annotation is: (or (and (<= 8640 main_~s__state~0) (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2)) [2020-10-12 21:00:08,636 INFO L268 CegarLoopResult]: For program point L95(lines 95 97) no Hoare annotation was computed. [2020-10-12 21:00:08,636 INFO L268 CegarLoopResult]: For program point L29(lines 29 124) no Hoare annotation was computed. [2020-10-12 21:00:08,636 INFO L264 CegarLoopResult]: At program point L25(lines 24 127) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-10-12 21:00:08,637 INFO L264 CegarLoopResult]: At program point L50(lines 49 108) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 2)) (and .cse0 (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0))))) [2020-10-12 21:00:08,637 INFO L264 CegarLoopResult]: At program point L46(lines 45 110) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 2)) (and .cse0 (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0))))) [2020-10-12 21:00:08,637 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 140) no Hoare annotation was computed. [2020-10-12 21:00:08,637 INFO L264 CegarLoopResult]: At program point L96(lines 8 140) the Hoare annotation is: false [2020-10-12 21:00:08,637 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 138) no Hoare annotation was computed. [2020-10-12 21:00:08,637 INFO L264 CegarLoopResult]: At program point L30(lines 29 124) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-10-12 21:00:08,638 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 140) the Hoare annotation is: true [2020-10-12 21:00:08,638 INFO L268 CegarLoopResult]: For program point L92-1(lines 53 106) no Hoare annotation was computed. [2020-10-12 21:00:08,638 INFO L268 CegarLoopResult]: For program point L88-1(lines 53 106) no Hoare annotation was computed. [2020-10-12 21:00:08,638 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-12 21:00:08,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:00:08 BoogieIcfgContainer [2020-10-12 21:00:08,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 21:00:08,659 INFO L168 Benchmark]: Toolchain (without parser) took 2429.54 ms. Allocated memory was 147.3 MB in the beginning and 233.8 MB in the end (delta: 86.5 MB). Free memory was 103.1 MB in the beginning and 130.2 MB in the end (delta: -27.1 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:08,660 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 21:00:08,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.90 ms. Allocated memory is still 147.3 MB. Free memory was 102.9 MB in the beginning and 92.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:08,662 INFO L168 Benchmark]: Boogie Preprocessor took 131.53 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.6 MB in the beginning and 181.4 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:08,663 INFO L168 Benchmark]: RCFGBuilder took 275.90 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 167.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:08,664 INFO L168 Benchmark]: TraceAbstraction took 1772.18 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 166.5 MB in the beginning and 130.2 MB in the end (delta: 36.2 MB). Peak memory consumption was 66.7 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:08,668 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.90 ms. Allocated memory is still 147.3 MB. Free memory was 102.9 MB in the beginning and 92.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.53 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.6 MB in the beginning and 181.4 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.90 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 167.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1772.18 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 166.5 MB in the beginning and 130.2 MB in the end (delta: 36.2 MB). Peak memory consumption was 66.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: 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: 49]: Loop Invariant Derived loop invariant: (8640 <= s__state && blastFlag <= 2) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0)) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0)) || blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (8640 <= s__state && blastFlag <= 2) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0)) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 83 SDslu, 118 SDs, 0 SdLazy, 92 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 31 NumberOfFragments, 65 HoareAnnotationTreeSize, 11 FomulaSimplifications, 123 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 7566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 93/93 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...