/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:59:53,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:59:53,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:59:53,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:59:53,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:59:53,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:59:53,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:59:53,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:59:53,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:59:53,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:59:53,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:59:53,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:59:53,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:59:53,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:59:53,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:59:53,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:59:53,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:59:53,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:59:53,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:59:53,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:59:53,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:59:53,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:59:53,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:59:53,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:59:53,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:59:53,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:59:53,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:59:53,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:59:53,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:59:53,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:59:53,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:59:53,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:59:53,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:59:53,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:59:53,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:59:53,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:59:53,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:59:53,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:59:53,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:59:53,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:59:53,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:59:53,496 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 [2020-10-29 09:59:53,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:59:53,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:59:53,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:59:53,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:59:53,565 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:59:53,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:59:53,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:59:53,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:59:53,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:59:53,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:59:53,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:59:53,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:59:53,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:59:53,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:59:53,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:59:53,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:59:53,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:59:53,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:59:53,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:59:53,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:59:53,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:59:53,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:59:53,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:59:53,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:59:53,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:59:53,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:59:53,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:59:53,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:59:53,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:59:53,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:59:53,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:59:53,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:59:53,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:59:53,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:59:53,966 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:59:53,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-10-29 09:59:54,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47138404/3974edc4a2f2488081a72deb740f2722/FLAGdb6ab7bb0 [2020-10-29 09:59:54,704 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:59:54,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/lu.cmp.c [2020-10-29 09:59:54,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47138404/3974edc4a2f2488081a72deb740f2722/FLAGdb6ab7bb0 [2020-10-29 09:59:55,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47138404/3974edc4a2f2488081a72deb740f2722 [2020-10-29 09:59:55,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:59:55,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:59:55,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:59:55,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:59:55,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:59:55,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d506c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55, skipping insertion in model container [2020-10-29 09:59:55,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:59:55,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:59:55,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:59:55,315 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:59:55,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:59:55,367 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:59:55,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55 WrapperNode [2020-10-29 09:59:55,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:59:55,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:59:55,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:59:55,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:59:55,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (1/1) ... [2020-10-29 09:59:55,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:59:55,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:59:55,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:59:55,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:59:55,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (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 [2020-10-29 09:59:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:59:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:59:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:59:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:59:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-10-29 09:59:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:59:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-10-29 09:59:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:59:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:59:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:59:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:59:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:59:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-10-29 09:59:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-10-29 09:59:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:59:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:59:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:59:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:59:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:59:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:59:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:59:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:59:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:59:56,320 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:59:56,320 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-29 09:59:56,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:59:56 BoogieIcfgContainer [2020-10-29 09:59:56,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:59:56,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:59:56,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:59:56,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:59:56,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:59:55" (1/3) ... [2020-10-29 09:59:56,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be3f084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:59:56, skipping insertion in model container [2020-10-29 09:59:56,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:55" (2/3) ... [2020-10-29 09:59:56,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be3f084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:59:56, skipping insertion in model container [2020-10-29 09:59:56,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:59:56" (3/3) ... [2020-10-29 09:59:56,331 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-10-29 09:59:56,343 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:59:56,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:59:56,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:59:56,391 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:59:56,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:59:56,392 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:59:56,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:59:56,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:59:56,392 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:59:56,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:59:56,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:59:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-29 09:59:56,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:59:56,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:56,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:56,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash 636154150, now seen corresponding path program 1 times [2020-10-29 09:59:56,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:56,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845918128] [2020-10-29 09:59:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:57,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:59:57,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:59:57,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 09:59:57,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:57,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:59:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:59:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:59:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:59:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:57,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:57,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:59:57,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:57,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:57,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:59:57,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845918128] [2020-10-29 09:59:57,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:59:57,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:59:57,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989732739] [2020-10-29 09:59:57,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:59:57,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:57,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:59:57,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:59:57,305 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 6 states. [2020-10-29 09:59:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:57,904 INFO L93 Difference]: Finished difference Result 146 states and 216 transitions. [2020-10-29 09:59:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:59:57,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-29 09:59:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:57,914 INFO L225 Difference]: With dead ends: 146 [2020-10-29 09:59:57,915 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 09:59:57,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:59:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 09:59:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-10-29 09:59:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 09:59:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 09:59:57,968 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 13 [2020-10-29 09:59:57,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:57,969 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 09:59:57,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:59:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 09:59:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:59:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:57,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:57,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:59:57,970 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1293456893, now seen corresponding path program 1 times [2020-10-29 09:59:57,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:57,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474973782] [2020-10-29 09:59:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:59,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:59:59,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:59:59,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-29 09:59:59,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:59,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:59:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:59:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:59:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:59,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:59,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:59,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:59:59,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:59,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:59:59,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 09:59:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:59,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:59,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:59,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:59:59,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:59,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:59,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:59,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:59:59,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474973782] [2020-10-29 09:59:59,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:59,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 09:59:59,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979653475] [2020-10-29 09:59:59,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:59:59,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:59,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:59:59,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:59:59,253 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-29 09:59:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:59,438 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-29 09:59:59,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:59:59,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 09:59:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:59,441 INFO L225 Difference]: With dead ends: 59 [2020-10-29 09:59:59,441 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 09:59:59,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:59:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 09:59:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-29 09:59:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 09:59:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 09:59:59,452 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-10-29 09:59:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:59,453 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 09:59:59,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:59:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 09:59:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:59:59,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:59,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:59,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:59:59,455 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:59,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1426298141, now seen corresponding path program 1 times [2020-10-29 09:59:59,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:59,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535265449] [2020-10-29 09:59:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:59,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:04,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 10:00:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 10:00:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 10:00:04,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:04,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:00:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 10:00:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 10:00:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:04,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:04,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:04,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:00:04,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:04,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:04,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:04,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:04,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:04,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:00:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:04,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:04,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:04,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:04,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:04,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:04,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 10:00:04,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535265449] [2020-10-29 10:00:04,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:04,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 10:00:04,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712819791] [2020-10-29 10:00:04,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:00:04,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:04,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:00:04,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:00:04,625 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-10-29 10:00:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:04,847 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2020-10-29 10:00:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 10:00:04,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 10:00:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:04,850 INFO L225 Difference]: With dead ends: 68 [2020-10-29 10:00:04,851 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 10:00:04,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:00:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 10:00:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-29 10:00:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 10:00:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-29 10:00:04,870 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-10-29 10:00:04,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:04,870 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-29 10:00:04,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:00:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-29 10:00:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 10:00:04,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:04,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:04,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 10:00:04,874 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:04,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:04,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1988548925, now seen corresponding path program 2 times [2020-10-29 10:00:04,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:04,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551354478] [2020-10-29 10:00:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:09,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 10:00:09,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-29 10:00:09,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 10:00:09,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:09,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:00:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 10:00:09,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:10,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:10,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:00:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:10,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 10:00:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:10,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:10,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:10,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:10,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 10:00:10,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551354478] [2020-10-29 10:00:10,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:10,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 10:00:10,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958084052] [2020-10-29 10:00:10,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 10:00:10,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:10,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 10:00:10,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 10:00:10,086 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 7 states. [2020-10-29 10:00:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:10,335 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2020-10-29 10:00:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:00:10,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-29 10:00:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:10,338 INFO L225 Difference]: With dead ends: 80 [2020-10-29 10:00:10,338 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 10:00:10,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:00:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 10:00:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-29 10:00:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 10:00:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-29 10:00:10,357 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 38 [2020-10-29 10:00:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:10,358 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-29 10:00:10,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 10:00:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-29 10:00:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 10:00:10,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:10,362 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:10,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 10:00:10,362 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:10,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1236082083, now seen corresponding path program 3 times [2020-10-29 10:00:10,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:10,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150237726] [2020-10-29 10:00:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:12,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:13,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:15,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 10:00:15,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-29 10:00:15,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 10:00:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:15,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:15,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 10:00:15,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:15,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:00:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:15,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:15,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 10:00:15,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150237726] [2020-10-29 10:00:15,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:15,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 10:00:15,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550625868] [2020-10-29 10:00:15,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 10:00:15,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:15,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 10:00:15,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 10:00:15,565 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 7 states. [2020-10-29 10:00:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:15,853 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-29 10:00:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 10:00:15,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-29 10:00:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:15,856 INFO L225 Difference]: With dead ends: 75 [2020-10-29 10:00:15,856 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 10:00:15,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:00:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 10:00:15,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-29 10:00:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 10:00:15,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2020-10-29 10:00:15,871 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 46 [2020-10-29 10:00:15,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:15,872 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2020-10-29 10:00:15,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 10:00:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2020-10-29 10:00:15,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 10:00:15,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:15,874 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:15,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 10:00:15,874 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:15,875 INFO L82 PathProgramCache]: Analyzing trace with hash 133488098, now seen corresponding path program 4 times [2020-10-29 10:00:15,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:15,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020801107] [2020-10-29 10:00:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:15,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:20,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 10:00:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 10:00:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 10:00:20,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:20,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:00:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 10:00:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:21,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:21,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:21,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:00:21,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:21,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:21,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:21,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:21,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:21,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:00:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:21,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:21,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:21,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 10:00:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:21,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:21,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:21,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:21,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:21,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-29 10:00:21,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020801107] [2020-10-29 10:00:21,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:21,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 10:00:21,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909619109] [2020-10-29 10:00:21,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:00:21,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:21,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:00:21,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:00:21,076 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 8 states. [2020-10-29 10:00:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:21,446 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-10-29 10:00:21,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:00:21,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-29 10:00:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:21,448 INFO L225 Difference]: With dead ends: 70 [2020-10-29 10:00:21,448 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 10:00:21,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:00:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 10:00:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 10:00:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 10:00:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 10:00:21,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2020-10-29 10:00:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:21,450 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 10:00:21,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:00:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 10:00:21,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 10:00:21,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 10:00:21,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 10:00:21,723 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 10:00:21,723 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 10:00:21,723 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 10:00:21,723 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 10:00:21,724 INFO L274 CegarLoopResult]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2020-10-29 10:00:21,724 INFO L277 CegarLoopResult]: At program point L118-3(lines 118 136) the Hoare annotation is: true [2020-10-29 10:00:21,724 INFO L274 CegarLoopResult]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2020-10-29 10:00:21,724 INFO L277 CegarLoopResult]: At program point L120(line 120) the Hoare annotation is: true [2020-10-29 10:00:21,724 INFO L274 CegarLoopResult]: For program point L120-1(line 120) no Hoare annotation was computed. [2020-10-29 10:00:21,724 INFO L274 CegarLoopResult]: For program point ludcmpEXIT(lines 111 155) no Hoare annotation was computed. [2020-10-29 10:00:21,724 INFO L270 CegarLoopResult]: At program point ludcmpENTRY(lines 111 155) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-29 10:00:21,724 INFO L274 CegarLoopResult]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2020-10-29 10:00:21,725 INFO L277 CegarLoopResult]: At program point L129-3(lines 129 135) the Hoare annotation is: true [2020-10-29 10:00:21,725 INFO L274 CegarLoopResult]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2020-10-29 10:00:21,725 INFO L277 CegarLoopResult]: At program point L121-3(lines 121 128) the Hoare annotation is: true [2020-10-29 10:00:21,725 INFO L274 CegarLoopResult]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2020-10-29 10:00:21,725 INFO L274 CegarLoopResult]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2020-10-29 10:00:21,725 INFO L277 CegarLoopResult]: At program point L146-3(lines 146 152) the Hoare annotation is: true [2020-10-29 10:00:21,725 INFO L274 CegarLoopResult]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2020-10-29 10:00:21,725 INFO L274 CegarLoopResult]: For program point ludcmpFINAL(lines 111 155) no Hoare annotation was computed. [2020-10-29 10:00:21,725 INFO L274 CegarLoopResult]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2020-10-29 10:00:21,726 INFO L277 CegarLoopResult]: At program point L138-3(lines 138 144) the Hoare annotation is: true [2020-10-29 10:00:21,726 INFO L274 CegarLoopResult]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2020-10-29 10:00:21,726 INFO L274 CegarLoopResult]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2020-10-29 10:00:21,726 INFO L277 CegarLoopResult]: At program point L132-3(lines 132 133) the Hoare annotation is: true [2020-10-29 10:00:21,726 INFO L274 CegarLoopResult]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2020-10-29 10:00:21,726 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-29 10:00:21,726 INFO L274 CegarLoopResult]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2020-10-29 10:00:21,726 INFO L274 CegarLoopResult]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2020-10-29 10:00:21,726 INFO L277 CegarLoopResult]: At program point L149-3(lines 149 150) the Hoare annotation is: true [2020-10-29 10:00:21,727 INFO L274 CegarLoopResult]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2020-10-29 10:00:21,727 INFO L274 CegarLoopResult]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2020-10-29 10:00:21,727 INFO L277 CegarLoopResult]: At program point L141-3(lines 141 142) the Hoare annotation is: true [2020-10-29 10:00:21,727 INFO L274 CegarLoopResult]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2020-10-29 10:00:21,727 INFO L274 CegarLoopResult]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2020-10-29 10:00:21,727 INFO L277 CegarLoopResult]: At program point L125-3(lines 125 126) the Hoare annotation is: true [2020-10-29 10:00:21,727 INFO L274 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-10-29 10:00:21,727 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 10:00:21,728 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |old(#memory_real)| |#memory_real|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-29 10:00:21,728 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 10:00:21,728 INFO L274 CegarLoopResult]: For program point L80(lines 80 81) no Hoare annotation was computed. [2020-10-29 10:00:21,728 INFO L274 CegarLoopResult]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2020-10-29 10:00:21,728 INFO L274 CegarLoopResult]: For program point fabsEXIT(lines 76 83) no Hoare annotation was computed. [2020-10-29 10:00:21,728 INFO L277 CegarLoopResult]: At program point fabsENTRY(lines 76 83) the Hoare annotation is: true [2020-10-29 10:00:21,728 INFO L274 CegarLoopResult]: For program point fabsFINAL(lines 76 83) no Hoare annotation was computed. [2020-10-29 10:00:21,729 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 10:00:21,729 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 10:00:21,729 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 10:00:21,729 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 10:00:21,729 INFO L274 CegarLoopResult]: For program point L99-2(line 99) no Hoare annotation was computed. [2020-10-29 10:00:21,729 INFO L274 CegarLoopResult]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2020-10-29 10:00:21,729 INFO L270 CegarLoopResult]: At program point L93-3(lines 93 104) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-10-29 10:00:21,729 INFO L277 CegarLoopResult]: At program point L93-4(lines 93 104) the Hoare annotation is: true [2020-10-29 10:00:21,730 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 85 109) no Hoare annotation was computed. [2020-10-29 10:00:21,730 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 85 109) no Hoare annotation was computed. [2020-10-29 10:00:21,730 INFO L274 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-10-29 10:00:21,730 INFO L274 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-10-29 10:00:21,730 INFO L274 CegarLoopResult]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2020-10-29 10:00:21,730 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 85 109) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-29 10:00:21,730 INFO L270 CegarLoopResult]: At program point L96-3(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-10-29 10:00:21,730 INFO L270 CegarLoopResult]: At program point L96-4(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-10-29 10:00:21,731 INFO L274 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-10-29 10:00:21,731 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-29 10:00:21,731 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-29 10:00:21,731 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 10:00:21,731 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-29 10:00:21,731 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-29 10:00:21,731 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-29 10:00:21,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 10:00:21 BoogieIcfgContainer [2020-10-29 10:00:21,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 10:00:21,753 INFO L168 Benchmark]: Toolchain (without parser) took 26723.03 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 108.5 MB in the beginning and 359.6 MB in the end (delta: -251.1 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. [2020-10-29 10:00:21,753 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 10:00:21,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.44 ms. Allocated memory is still 151.0 MB. Free memory was 107.9 MB in the beginning and 128.3 MB in the end (delta: -20.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 10:00:21,755 INFO L168 Benchmark]: Boogie Preprocessor took 105.20 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 132.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 10:00:21,755 INFO L168 Benchmark]: RCFGBuilder took 846.91 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 104.2 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-29 10:00:21,756 INFO L168 Benchmark]: TraceAbstraction took 25426.03 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 103.9 MB in the beginning and 359.6 MB in the end (delta: -255.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2020-10-29 10:00:21,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.44 ms. Allocated memory is still 151.0 MB. Free memory was 107.9 MB in the beginning and 128.3 MB in the end (delta: -20.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.20 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 132.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 846.91 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 104.2 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25426.03 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 103.9 MB in the beginning and 359.6 MB in the end (delta: -255.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 132]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (i <= 5 && n <= 5) && 5 <= n - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: n <= 5 && 5 <= n - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.0s, OverallIterations: 6, TraceHistogramMax: 9, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 130 SDslu, 324 SDs, 0 SdLazy, 425 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=5, 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, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 69 PreInvPairs, 109 NumberOfFragments, 118 HoareAnnotationTreeSize, 69 FomulaSimplifications, 637 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 23 FomulaSimplificationsInter, 271 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 33818 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 204/322 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...