/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=SHALLOWEST --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 [2020-10-27 01:57:22,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:57:22,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:57:22,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:57:22,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:57:22,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:57:22,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:57:22,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:57:22,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:57:22,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:57:22,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:57:22,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:57:22,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:57:22,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:57:22,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:57:22,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:57:22,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:57:22,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:57:22,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:57:22,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:57:22,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:57:22,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:57:22,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:57:22,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:57:22,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:57:22,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:57:22,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:57:22,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:57:22,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:57:22,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:57:22,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:57:22,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:57:22,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:57:22,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:57:22,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:57:22,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:57:22,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:57:22,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:57:22,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:57:22,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:57:22,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:57:22,723 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 [2020-10-27 01:57:22,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:57:22,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:57:22,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:57:22,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:57:22,792 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:57:22,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:57:22,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:57:22,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:57:22,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:57:22,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:57:22,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:57:22,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:57:22,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:57:22,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:57:22,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:57:22,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:57:22,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:57:22,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:57:22,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:57:22,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:57:22,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:57:22,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:57:22,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:57:22,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:57:22,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:57:22,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:57:22,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:57:22,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:57:22,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:57:22,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:57:23,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:57:23,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:57:23,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:57:23,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:57:23,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:57:23,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-10-27 01:57:23,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4fd60edb/0aea3c5cf8004aa0b4727672c3b988c4/FLAGd6d5996bf [2020-10-27 01:57:23,924 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:57:23,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/lu.cmp.c [2020-10-27 01:57:23,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4fd60edb/0aea3c5cf8004aa0b4727672c3b988c4/FLAGd6d5996bf [2020-10-27 01:57:24,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4fd60edb/0aea3c5cf8004aa0b4727672c3b988c4 [2020-10-27 01:57:24,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:57:24,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:57:24,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:57:24,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:57:24,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:57:24,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e66967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24, skipping insertion in model container [2020-10-27 01:57:24,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:57:24,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:57:24,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:57:24,626 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:57:24,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:57:24,690 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:57:24,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24 WrapperNode [2020-10-27 01:57:24,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:57:24,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:57:24,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:57:24,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:57:24,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (1/1) ... [2020-10-27 01:57:24,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:57:24,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:57:24,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:57:24,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:57:24,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (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 [2020-10-27 01:57:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:57:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:57:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:57:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:57:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-10-27 01:57:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:57:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-10-27 01:57:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:57:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:57:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:57:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:57:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:57:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-10-27 01:57:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-10-27 01:57:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:57:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:57:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:57:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:57:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:57:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:57:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:57:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:57:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:57:25,518 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:57:25,518 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-27 01:57:25,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:57:25 BoogieIcfgContainer [2020-10-27 01:57:25,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:57:25,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:57:25,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:57:25,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:57:25,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:57:24" (1/3) ... [2020-10-27 01:57:25,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23306b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:57:25, skipping insertion in model container [2020-10-27 01:57:25,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:57:24" (2/3) ... [2020-10-27 01:57:25,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23306b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:57:25, skipping insertion in model container [2020-10-27 01:57:25,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:57:25" (3/3) ... [2020-10-27 01:57:25,535 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-10-27 01:57:25,550 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:57:25,557 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:57:25,571 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:57:25,618 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:57:25,618 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:57:25,618 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:57:25,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:57:25,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:57:25,619 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:57:25,619 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:57:25,619 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:57:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-27 01:57:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:57:25,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:57:25,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:57:25,653 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:57:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:57:25,663 INFO L82 PathProgramCache]: Analyzing trace with hash 636154150, now seen corresponding path program 1 times [2020-10-27 01:57:25,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:57:25,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131563445] [2020-10-27 01:57:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:57:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:26,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:26,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:57:26,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:57:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-27 01:57:26,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:26,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:57:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:57:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:57:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:57:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:26,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:26,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:26,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:57:26,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:26,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:57:26,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131563445] [2020-10-27 01:57:26,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:57:26,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:57:26,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483653641] [2020-10-27 01:57:26,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:57:26,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:57:26,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:57:26,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:57:26,550 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 6 states. [2020-10-27 01:57:27,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:57:27,237 INFO L93 Difference]: Finished difference Result 146 states and 216 transitions. [2020-10-27 01:57:27,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:57:27,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-27 01:57:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:57:27,251 INFO L225 Difference]: With dead ends: 146 [2020-10-27 01:57:27,251 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 01:57:27,257 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 [2020-10-27 01:57:27,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 01:57:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-10-27 01:57:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 01:57:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 01:57:27,315 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 13 [2020-10-27 01:57:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:57:27,316 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 01:57:27,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:57:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 01:57:27,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:57:27,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:57:27,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:57:27,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:57:27,319 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:57:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:57:27,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1293456893, now seen corresponding path program 1 times [2020-10-27 01:57:27,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:57:27,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433069937] [2020-10-27 01:57:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:57:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:28,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:28,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:57:28,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:57:28,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-27 01:57:28,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:57:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:57:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:57:28,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:28,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:28,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:28,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:28,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:57:28,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 01:57:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 01:57:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:28,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:28,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:28,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:28,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:28,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:57:28,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:57:28,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433069937] [2020-10-27 01:57:28,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:57:28,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:57:28,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240656432] [2020-10-27 01:57:28,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:57:28,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:57:28,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:57:28,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:57:28,886 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-27 01:57:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:57:29,333 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-27 01:57:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:57:29,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-27 01:57:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:57:29,335 INFO L225 Difference]: With dead ends: 51 [2020-10-27 01:57:29,336 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 01:57:29,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:57:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 01:57:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-10-27 01:57:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 01:57:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-27 01:57:29,349 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 22 [2020-10-27 01:57:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:57:29,349 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-27 01:57:29,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:57:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-27 01:57:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 01:57:29,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:57:29,351 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:57:29,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:57:29,351 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:57:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:57:29,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1361717165, now seen corresponding path program 2 times [2020-10-27 01:57:29,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:57:29,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762239767] [2020-10-27 01:57:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:57:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:29,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:31,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:31,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 01:57:31,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 01:57:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2611 [2020-10-27 01:57:31,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:57:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:57:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 01:57:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:32,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:32,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:57:32,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 01:57:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:32,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:32,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:32,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:32,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:32,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:57:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:32,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:32,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:57:32,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:32,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 01:57:32,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762239767] [2020-10-27 01:57:32,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:57:32,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:57:32,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674484309] [2020-10-27 01:57:32,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:57:32,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:57:32,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:57:32,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:57:32,151 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 8 states. [2020-10-27 01:57:32,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:57:32,596 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-27 01:57:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:57:32,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-27 01:57:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:57:32,599 INFO L225 Difference]: With dead ends: 63 [2020-10-27 01:57:32,599 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 01:57:32,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:57:32,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 01:57:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-10-27 01:57:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 01:57:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-27 01:57:32,612 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 31 [2020-10-27 01:57:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:57:32,612 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-27 01:57:32,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:57:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-27 01:57:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:57:32,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:57:32,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:57:32,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:57:32,615 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:57:32,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:57:32,615 INFO L82 PathProgramCache]: Analyzing trace with hash -242297155, now seen corresponding path program 3 times [2020-10-27 01:57:32,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:57:32,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466258005] [2020-10-27 01:57:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:57:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:32,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:32,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:33,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:33,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:35,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:36,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 01:57:36,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 01:57:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3582 [2020-10-27 01:57:36,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:57:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:57:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:57:36,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:36,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:36,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:36,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:36,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:57:36,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 01:57:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:36,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:36,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:57:36,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:57:36,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:57:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:36,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:36,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:36,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:36,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:57:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:36,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:57:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 01:57:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:36,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:36,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:36,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:57:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 01:57:36,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466258005] [2020-10-27 01:57:36,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:57:36,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 01:57:36,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563784727] [2020-10-27 01:57:36,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:57:36,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:57:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:57:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:57:36,368 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 5 states. [2020-10-27 01:57:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:57:36,605 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2020-10-27 01:57:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:57:36,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 01:57:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:57:36,608 INFO L225 Difference]: With dead ends: 115 [2020-10-27 01:57:36,608 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 01:57:36,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:57:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 01:57:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2020-10-27 01:57:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 01:57:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-10-27 01:57:36,651 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 40 [2020-10-27 01:57:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:57:36,652 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-10-27 01:57:36,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:57:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-10-27 01:57:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 01:57:36,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:57:36,654 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:57:36,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:57:36,654 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:57:36,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:57:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash -204903171, now seen corresponding path program 1 times [2020-10-27 01:57:36,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:57:36,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35749065] [2020-10-27 01:57:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:57:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:38,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:38,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:41,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 01:57:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 01:57:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 01:57:41,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:57:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:57:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 01:57:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:41,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:41,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:41,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:57:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:57:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:57:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 01:57:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:41,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:41,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:41,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:57:41,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:41,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 01:57:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:41,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:57:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 01:57:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:41,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:41,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:41,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:57:41,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:41,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-27 01:57:41,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35749065] [2020-10-27 01:57:41,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:57:41,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:57:41,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826002341] [2020-10-27 01:57:41,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:57:41,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:57:41,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:57:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:57:41,917 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 7 states. [2020-10-27 01:57:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:57:42,235 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-27 01:57:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:57:42,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-27 01:57:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:57:42,237 INFO L225 Difference]: With dead ends: 59 [2020-10-27 01:57:42,238 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:57:42,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:57:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:57:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:57:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:57:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:57:42,240 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2020-10-27 01:57:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:57:42,242 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:57:42,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:57:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:57:42,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:57:42,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:57:42,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:57:42,661 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 01:57:42,661 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 01:57:42,661 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 01:57:42,661 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 01:57:42,662 INFO L274 CegarLoopResult]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2020-10-27 01:57:42,662 INFO L277 CegarLoopResult]: At program point L118-3(lines 118 136) the Hoare annotation is: true [2020-10-27 01:57:42,662 INFO L274 CegarLoopResult]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2020-10-27 01:57:42,662 INFO L277 CegarLoopResult]: At program point L120(line 120) the Hoare annotation is: true [2020-10-27 01:57:42,662 INFO L274 CegarLoopResult]: For program point L120-1(line 120) no Hoare annotation was computed. [2020-10-27 01:57:42,662 INFO L274 CegarLoopResult]: For program point ludcmpEXIT(lines 111 155) no Hoare annotation was computed. [2020-10-27 01:57:42,662 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|)) [2020-10-27 01:57:42,663 INFO L274 CegarLoopResult]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2020-10-27 01:57:42,663 INFO L277 CegarLoopResult]: At program point L129-3(lines 129 135) the Hoare annotation is: true [2020-10-27 01:57:42,666 INFO L274 CegarLoopResult]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2020-10-27 01:57:42,666 INFO L277 CegarLoopResult]: At program point L121-3(lines 121 128) the Hoare annotation is: true [2020-10-27 01:57:42,666 INFO L274 CegarLoopResult]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2020-10-27 01:57:42,666 INFO L274 CegarLoopResult]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2020-10-27 01:57:42,666 INFO L277 CegarLoopResult]: At program point L146-3(lines 146 152) the Hoare annotation is: true [2020-10-27 01:57:42,666 INFO L274 CegarLoopResult]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2020-10-27 01:57:42,666 INFO L274 CegarLoopResult]: For program point ludcmpFINAL(lines 111 155) no Hoare annotation was computed. [2020-10-27 01:57:42,667 INFO L274 CegarLoopResult]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2020-10-27 01:57:42,667 INFO L277 CegarLoopResult]: At program point L138-3(lines 138 144) the Hoare annotation is: true [2020-10-27 01:57:42,667 INFO L274 CegarLoopResult]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2020-10-27 01:57:42,667 INFO L274 CegarLoopResult]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2020-10-27 01:57:42,667 INFO L277 CegarLoopResult]: At program point L132-3(lines 132 133) the Hoare annotation is: true [2020-10-27 01:57:42,667 INFO L274 CegarLoopResult]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2020-10-27 01:57:42,667 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-27 01:57:42,668 INFO L274 CegarLoopResult]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2020-10-27 01:57:42,668 INFO L274 CegarLoopResult]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2020-10-27 01:57:42,668 INFO L277 CegarLoopResult]: At program point L149-3(lines 149 150) the Hoare annotation is: true [2020-10-27 01:57:42,668 INFO L274 CegarLoopResult]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2020-10-27 01:57:42,668 INFO L274 CegarLoopResult]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2020-10-27 01:57:42,669 INFO L277 CegarLoopResult]: At program point L141-3(lines 141 142) the Hoare annotation is: true [2020-10-27 01:57:42,669 INFO L274 CegarLoopResult]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2020-10-27 01:57:42,669 INFO L274 CegarLoopResult]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2020-10-27 01:57:42,669 INFO L277 CegarLoopResult]: At program point L125-3(lines 125 126) the Hoare annotation is: true [2020-10-27 01:57:42,669 INFO L274 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-10-27 01:57:42,669 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:57:42,669 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)|)) [2020-10-27 01:57:42,670 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:57:42,670 INFO L274 CegarLoopResult]: For program point L80(lines 80 81) no Hoare annotation was computed. [2020-10-27 01:57:42,670 INFO L274 CegarLoopResult]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2020-10-27 01:57:42,670 INFO L274 CegarLoopResult]: For program point fabsEXIT(lines 76 83) no Hoare annotation was computed. [2020-10-27 01:57:42,671 INFO L277 CegarLoopResult]: At program point fabsENTRY(lines 76 83) the Hoare annotation is: true [2020-10-27 01:57:42,671 INFO L274 CegarLoopResult]: For program point fabsFINAL(lines 76 83) no Hoare annotation was computed. [2020-10-27 01:57:42,671 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:57:42,671 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:57:42,671 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:57:42,671 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:57:42,671 INFO L274 CegarLoopResult]: For program point L99-2(line 99) no Hoare annotation was computed. [2020-10-27 01:57:42,671 INFO L274 CegarLoopResult]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2020-10-27 01:57:42,672 INFO L270 CegarLoopResult]: At program point L93-3(lines 93 104) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-10-27 01:57:42,672 INFO L277 CegarLoopResult]: At program point L93-4(lines 93 104) the Hoare annotation is: true [2020-10-27 01:57:42,672 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 85 109) no Hoare annotation was computed. [2020-10-27 01:57:42,672 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 85 109) no Hoare annotation was computed. [2020-10-27 01:57:42,672 INFO L274 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-10-27 01:57:42,672 INFO L274 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-10-27 01:57:42,672 INFO L274 CegarLoopResult]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2020-10-27 01:57:42,673 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|)) [2020-10-27 01:57:42,673 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)) [2020-10-27 01:57:42,673 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)) [2020-10-27 01:57:42,673 INFO L274 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-10-27 01:57:42,674 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-27 01:57:42,674 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-27 01:57:42,675 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-27 01:57:42,675 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:57:42,675 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-27 01:57:42,675 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-27 01:57:42,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:57:42 BoogieIcfgContainer [2020-10-27 01:57:42,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:57:42,703 INFO L168 Benchmark]: Toolchain (without parser) took 18389.22 ms. Allocated memory was 151.0 MB in the beginning and 381.7 MB in the end (delta: 230.7 MB). Free memory was 126.6 MB in the beginning and 270.0 MB in the end (delta: -143.4 MB). Peak memory consumption was 88.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:57:42,705 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:57:42,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 114.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:57:42,714 INFO L168 Benchmark]: Boogie Preprocessor took 64.56 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 112.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:57:42,716 INFO L168 Benchmark]: RCFGBuilder took 763.14 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 83.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:57:42,716 INFO L168 Benchmark]: TraceAbstraction took 17174.77 ms. Allocated memory was 151.0 MB in the beginning and 381.7 MB in the end (delta: 230.7 MB). Free memory was 82.9 MB in the beginning and 270.0 MB in the end (delta: -187.1 MB). Peak memory consumption was 44.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:57:42,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 369.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 114.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.56 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 112.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 763.14 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 83.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17174.77 ms. Allocated memory was 151.0 MB in the beginning and 381.7 MB in the end (delta: 230.7 MB). Free memory was 82.9 MB in the beginning and 270.0 MB in the end (delta: -187.1 MB). Peak memory consumption was 44.3 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: 16.6s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 143 SDslu, 293 SDs, 0 SdLazy, 391 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 66 PreInvPairs, 104 NumberOfFragments, 119 HoareAnnotationTreeSize, 66 FomulaSimplifications, 1536 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 271 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 20188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 109/148 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...