/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:19:36,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:19:36,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:19:36,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:19:36,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:19:36,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:19:36,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:19:36,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:19:36,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:19:36,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:19:36,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:19:36,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:19:36,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:19:36,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:19:36,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:19:36,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:19:36,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:19:36,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:19:36,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:19:36,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:19:36,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:19:36,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:19:36,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:19:36,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:19:36,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:19:36,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:19:36,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:19:36,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:19:36,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:19:36,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:19:36,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:19:36,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:19:36,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:19:36,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:19:36,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:19:36,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:19:36,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:19:36,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:19:36,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:19:36,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:19:36,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:19:36,465 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 [2020-10-14 05:19:36,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:19:36,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:19:36,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:19:36,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:19:36,513 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:19:36,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:19:36,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:19:36,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:19:36,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:19:36,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:19:36,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:19:36,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:19:36,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:19:36,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:19:36,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:19:36,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:19:36,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:19:36,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:19:36,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:19:36,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:19:36,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:19:36,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:19:36,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:19:36,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:19:36,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:19:36,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:19:36,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:19:36,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:19:36,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:19:36,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:19:36,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:19:36,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:19:36,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:19:36,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:19:36,879 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:19:36,880 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-10-14 05:19:36,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b595de77a/31be298e938948eaa60a8f9d0b9ddc39/FLAGe5d6970ed [2020-10-14 05:19:37,448 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:19:37,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/large_const.i [2020-10-14 05:19:37,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b595de77a/31be298e938948eaa60a8f9d0b9ddc39/FLAGe5d6970ed [2020-10-14 05:19:37,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b595de77a/31be298e938948eaa60a8f9d0b9ddc39 [2020-10-14 05:19:37,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:19:37,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:19:37,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:19:37,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:19:37,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:19:37,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:19:37" (1/1) ... [2020-10-14 05:19:37,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db04ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:37, skipping insertion in model container [2020-10-14 05:19:37,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:19:37" (1/1) ... [2020-10-14 05:19:37,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:19:37,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:19:38,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:19:38,099 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:19:38,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:19:38,130 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:19:38,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38 WrapperNode [2020-10-14 05:19:38,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:19:38,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:19:38,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:19:38,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:19:38,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (1/1) ... [2020-10-14 05:19:38,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (1/1) ... [2020-10-14 05:19:38,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (1/1) ... [2020-10-14 05:19:38,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (1/1) ... [2020-10-14 05:19:38,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (1/1) ... [2020-10-14 05:19:38,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (1/1) ... [2020-10-14 05:19:38,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (1/1) ... [2020-10-14 05:19:38,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:19:38,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:19:38,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:19:38,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:19:38,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (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 [2020-10-14 05:19:38,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:19:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:19:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:19:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:19:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:19:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:19:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:19:38,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:19:38,606 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 05:19:38,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:19:38 BoogieIcfgContainer [2020-10-14 05:19:38,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:19:38,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:19:38,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:19:38,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:19:38,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:19:37" (1/3) ... [2020-10-14 05:19:38,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae18770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:19:38, skipping insertion in model container [2020-10-14 05:19:38,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:19:38" (2/3) ... [2020-10-14 05:19:38,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae18770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:19:38, skipping insertion in model container [2020-10-14 05:19:38,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:19:38" (3/3) ... [2020-10-14 05:19:38,620 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-10-14 05:19:38,636 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:19:38,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:19:38,663 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:19:38,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:19:38,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:19:38,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:19:38,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:19:38,693 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:19:38,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:19:38,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:19:38,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:19:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-14 05:19:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:19:38,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:19:38,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:19:38,724 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:19:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:19:38,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1992019723, now seen corresponding path program 1 times [2020-10-14 05:19:38,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:19:38,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162415805] [2020-10-14 05:19:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:19:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:38,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:39,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:19:39,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 05:19:39,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:39,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:19:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:19:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:19:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:19:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:19:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:39,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:39,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:19:39,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:19:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:39,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:19:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:19:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:19:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:19:39,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162415805] [2020-10-14 05:19:39,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:19:39,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:19:39,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693469757] [2020-10-14 05:19:39,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:19:39,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:19:39,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:19:39,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:19:39,131 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-10-14 05:19:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:19:39,245 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2020-10-14 05:19:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:19:39,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-14 05:19:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:19:39,256 INFO L225 Difference]: With dead ends: 48 [2020-10-14 05:19:39,256 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 05:19:39,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:19:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 05:19:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 05:19:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:19:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-14 05:19:39,298 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2020-10-14 05:19:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:19:39,298 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-14 05:19:39,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:19:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-14 05:19:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 05:19:39,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:19:39,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:19:39,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:19:39,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:19:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:19:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2018685173, now seen corresponding path program 1 times [2020-10-14 05:19:39,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:19:39,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167951627] [2020-10-14 05:19:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:19:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:39,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:19:39,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 05:19:39,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:39,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:19:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:19:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:19:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:19:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:39,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:39,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:19:39,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:19:39,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:39,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:19:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:19:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:19:39,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:19:39,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167951627] [2020-10-14 05:19:39,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:19:39,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:19:39,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595622562] [2020-10-14 05:19:39,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:19:39,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:19:39,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:19:39,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:19:39,623 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 7 states. [2020-10-14 05:19:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:19:39,763 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-10-14 05:19:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:19:39,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-14 05:19:39,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:19:39,768 INFO L225 Difference]: With dead ends: 41 [2020-10-14 05:19:39,768 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 05:19:39,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:19:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 05:19:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-10-14 05:19:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 05:19:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-14 05:19:39,787 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2020-10-14 05:19:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:19:39,787 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-14 05:19:39,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:19:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-14 05:19:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:19:39,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:19:39,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:19:39,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:19:39,790 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:19:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:19:39,790 INFO L82 PathProgramCache]: Analyzing trace with hash 23130030, now seen corresponding path program 1 times [2020-10-14 05:19:39,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:19:39,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796424369] [2020-10-14 05:19:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:19:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:39,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:39,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:19:39,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 05:19:39,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:39,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:19:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:19:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:19:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:19:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:39,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:39,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:19:39,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:19:39,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:39,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:19:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:19:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:19:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:19:40,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796424369] [2020-10-14 05:19:40,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:19:40,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:19:40,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056871548] [2020-10-14 05:19:40,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:19:40,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:19:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:19:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:19:40,003 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2020-10-14 05:19:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:19:40,129 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-10-14 05:19:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:19:40,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-14 05:19:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:19:40,133 INFO L225 Difference]: With dead ends: 51 [2020-10-14 05:19:40,134 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 05:19:40,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:19:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 05:19:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-10-14 05:19:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 05:19:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-10-14 05:19:40,145 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2020-10-14 05:19:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:19:40,146 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-10-14 05:19:40,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:19:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-10-14 05:19:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:19:40,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:19:40,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:19:40,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:19:40,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:19:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:19:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash -786216596, now seen corresponding path program 1 times [2020-10-14 05:19:40,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:19:40,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523203420] [2020-10-14 05:19:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:19:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:40,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:40,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:19:40,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 05:19:40,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:40,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:19:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:19:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:19:40,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:19:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:40,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:40,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:40,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:19:40,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:40,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:19:40,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:40,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:19:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:19:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:19:40,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:19:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:19:40,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523203420] [2020-10-14 05:19:40,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:19:40,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:19:40,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250101552] [2020-10-14 05:19:40,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:19:40,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:19:40,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:19:40,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:19:40,353 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 7 states. [2020-10-14 05:19:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:19:40,471 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-14 05:19:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:19:40,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-14 05:19:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:19:40,473 INFO L225 Difference]: With dead ends: 55 [2020-10-14 05:19:40,473 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 05:19:40,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:19:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 05:19:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2020-10-14 05:19:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 05:19:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2020-10-14 05:19:40,484 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2020-10-14 05:19:40,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:19:40,485 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2020-10-14 05:19:40,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:19:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2020-10-14 05:19:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:19:40,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:19:40,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:19:40,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:19:40,487 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:19:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:19:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash -986746962, now seen corresponding path program 1 times [2020-10-14 05:19:40,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:19:40,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530307168] [2020-10-14 05:19:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:19:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:40,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:40,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:19:40,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:19:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 05:19:40,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:40,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:19:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:19:40,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:19:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:19:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:19:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:40,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:40,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:40,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:19:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:19:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:40,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:19:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:19:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:19:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:19:40,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530307168] [2020-10-14 05:19:40,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:19:40,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:19:40,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805656327] [2020-10-14 05:19:40,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:19:40,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:19:40,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:19:40,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:19:40,890 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 5 states. [2020-10-14 05:19:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:19:40,923 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2020-10-14 05:19:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:19:40,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 05:19:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:19:40,925 INFO L225 Difference]: With dead ends: 64 [2020-10-14 05:19:40,925 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 05:19:40,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:19:40,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 05:19:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-14 05:19:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 05:19:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 05:19:40,933 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2020-10-14 05:19:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:19:40,934 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 05:19:40,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:19:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 05:19:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:19:40,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:19:40,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:19:40,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:19:40,936 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:19:40,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:19:40,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1470890089, now seen corresponding path program 1 times [2020-10-14 05:19:40,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:19:40,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171120054] [2020-10-14 05:19:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:19:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:19:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:19:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-14 05:19:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:41,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:19:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:19:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:19:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:41,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:19:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:41,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:41,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:19:41,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:19:41,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:41,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:19:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:19:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:19:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:19:41,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:19:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:19:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:19:41,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:19:41,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:19:41,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:19:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:19:41,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:19:41,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:19:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:19:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:19:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:19:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:19:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:19:41,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171120054] [2020-10-14 05:19:41,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:19:41,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:19:41,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913979273] [2020-10-14 05:19:41,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:19:41,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:19:41,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:19:41,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:19:41,528 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-10-14 05:19:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:19:41,589 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-10-14 05:19:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:19:41,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-14 05:19:41,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:19:41,590 INFO L225 Difference]: With dead ends: 29 [2020-10-14 05:19:41,591 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:19:41,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:19:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:19:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:19:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:19:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:19:41,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-10-14 05:19:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:19:41,594 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:19:41,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:19:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:19:41,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:19:41,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:19:41,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:19:41,928 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:19:41,928 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:19:41,929 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:19:41,929 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:19:41,929 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:19:41,929 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:19:41,929 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:19:41,929 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 05:19:41,930 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:19:41,930 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:19:41,930 INFO L264 CegarLoopResult]: At program point L35-2(lines 35 39) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse5 (<= main_~n~0 main_~j~0)) (.cse1 (<= 1 main_~i~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= main_~n~0 1)) (.cse4 (<= 10000 main_~c3~0))) (or (and .cse0 .cse1 (< 0 main_~k~0) .cse2 (<= main_~n~0 (+ main_~j~0 1)) .cse3 .cse4) (and .cse5 (<= main_~i~0 0) (<= main_~n~0 0)) (and .cse0 .cse5 .cse1 .cse2 .cse3 .cse4))) [2020-10-14 05:19:41,930 INFO L268 CegarLoopResult]: For program point L35-3(lines 35 39) no Hoare annotation was computed. [2020-10-14 05:19:41,930 INFO L268 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-10-14 05:19:41,931 INFO L268 CegarLoopResult]: For program point L27(lines 27 32) no Hoare annotation was computed. [2020-10-14 05:19:41,931 INFO L264 CegarLoopResult]: At program point L29-2(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (<= 1 main_~i~0) (< 0 main_~k~0) .cse1 (<= main_~n~0 1) .cse2) (and .cse0 (<= main_~i~0 0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 0 main_~i~0) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) .cse1 .cse2))) [2020-10-14 05:19:41,931 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 41) no Hoare annotation was computed. [2020-10-14 05:19:41,931 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 33) no Hoare annotation was computed. [2020-10-14 05:19:41,931 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 41) no Hoare annotation was computed. [2020-10-14 05:19:41,932 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (< 0 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 (+ main_~j~0 1)) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-10-14 05:19:41,932 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-10-14 05:19:41,932 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 41) the Hoare annotation is: true [2020-10-14 05:19:41,932 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-10-14 05:19:41,932 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-14 05:19:41,932 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 05:19:41,933 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:19:41,933 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 05:19:41,933 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 05:19:41,933 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:19:41,933 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 05:19:41,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:19:41 BoogieIcfgContainer [2020-10-14 05:19:41,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:19:41,959 INFO L168 Benchmark]: Toolchain (without parser) took 4091.09 ms. Allocated memory was 145.2 MB in the beginning and 246.9 MB in the end (delta: 101.7 MB). Free memory was 99.9 MB in the beginning and 102.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:19:41,960 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 118.6 MB in the beginning and 118.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 05:19:41,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.65 ms. Allocated memory is still 145.2 MB. Free memory was 99.9 MB in the beginning and 89.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:19:41,962 INFO L168 Benchmark]: Boogie Preprocessor took 123.88 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 89.9 MB in the beginning and 178.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:19:41,963 INFO L168 Benchmark]: RCFGBuilder took 354.81 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 163.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:19:41,963 INFO L168 Benchmark]: TraceAbstraction took 3343.79 ms. Allocated memory was 200.3 MB in the beginning and 246.9 MB in the end (delta: 46.7 MB). Free memory was 163.3 MB in the beginning and 102.7 MB in the end (delta: 60.6 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. [2020-10-14 05:19:41,967 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 118.6 MB in the beginning and 118.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.65 ms. Allocated memory is still 145.2 MB. Free memory was 99.9 MB in the beginning and 89.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.88 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 89.9 MB in the beginning and 178.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.81 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 163.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3343.79 ms. Allocated memory was 200.3 MB in the beginning and 246.9 MB in the end (delta: 46.7 MB). Free memory was 163.3 MB in the beginning and 102.7 MB in the end (delta: 60.6 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((4000 <= c1 && 1 <= i) && 0 < k) && 2000 <= c2) && n <= 1) && 10000 <= c3) || (((((((4000 <= c1 && i <= 0) && 10000 <= c3 + k) && 0 <= i) && 4000 <= c1 + k) && 2000 <= c2 + k) && 2000 <= c2) && 10000 <= c3) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((4000 <= c1 && 1 <= i) && 0 < k) && 2000 <= c2) && n <= j + 1) && n <= 1) && 10000 <= c3) || ((n <= j && i <= 0) && n <= 0)) || (((((4000 <= c1 && n <= j) && 1 <= i) && 2000 <= c2) && n <= 1) && 10000 <= c3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 147 SDtfs, 115 SDslu, 406 SDs, 0 SdLazy, 223 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, 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, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 134 HoareAnnotationTreeSize, 12 FomulaSimplifications, 203 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3842 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 9/13 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...