/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:36:22,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:36:22,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:36:22,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:36:22,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:36:22,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:36:22,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:36:22,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:36:22,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:36:22,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:36:22,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:36:22,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:36:22,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:36:22,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:36:22,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:36:22,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:36:22,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:36:22,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:36:22,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:36:22,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:36:22,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:36:22,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:36:22,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:36:22,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:36:22,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:36:22,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:36:22,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:36:22,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:36:22,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:36:22,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:36:22,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:36:22,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:36:22,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:36:22,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:36:22,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:36:22,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:36:22,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:36:22,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:36:22,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:36:22,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:36:22,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:36:22,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:36:22,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:36:22,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:36:22,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:36:22,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:36:22,704 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:36:22,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:36:22,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:36:22,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:36:22,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:36:22,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:36:22,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:36:22,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:36:22,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:36:22,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:36:22,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:36:22,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:36:22,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:36:22,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:36:22,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:36:22,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:36:22,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:36:22,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:36:22,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:36:22,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:36:22,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:36:22,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:36:22,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:36:22,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:36:22,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:36:22,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:36:23,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:36:23,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:36:23,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:36:23,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:36:23,246 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:36:23,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-09-25 04:36:23,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebaf6646a/6ec8396823ac4bd595ee79d126092b6a/FLAGaef4db284 [2020-09-25 04:36:23,893 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:36:23,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-09-25 04:36:23,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebaf6646a/6ec8396823ac4bd595ee79d126092b6a/FLAGaef4db284 [2020-09-25 04:36:24,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebaf6646a/6ec8396823ac4bd595ee79d126092b6a [2020-09-25 04:36:24,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:36:24,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:36:24,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:36:24,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:36:24,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:36:24,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24, skipping insertion in model container [2020-09-25 04:36:24,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:36:24,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:36:24,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:36:24,534 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:36:24,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:36:24,576 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:36:24,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24 WrapperNode [2020-09-25 04:36:24,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:36:24,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:36:24,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:36:24,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:36:24,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (1/1) ... [2020-09-25 04:36:24,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:36:24,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:36:24,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:36:24,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:36:24,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (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 [2020-09-25 04:36:24,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:36:24,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:36:24,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 04:36:24,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:36:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:36:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:36:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 04:36:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:36:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:36:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:36:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:36:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:36:25,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:36:25,013 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:36:25,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:36:25 BoogieIcfgContainer [2020-09-25 04:36:25,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:36:25,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:36:25,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:36:25,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:36:25,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:36:24" (1/3) ... [2020-09-25 04:36:25,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd0c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:36:25, skipping insertion in model container [2020-09-25 04:36:25,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:24" (2/3) ... [2020-09-25 04:36:25,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd0c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:36:25, skipping insertion in model container [2020-09-25 04:36:25,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:36:25" (3/3) ... [2020-09-25 04:36:25,027 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2020-09-25 04:36:25,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:36:25,049 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:36:25,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:36:25,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:36:25,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:36:25,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:36:25,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:36:25,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:36:25,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:36:25,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:36:25,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:36:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 04:36:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 04:36:25,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:25,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:25,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:25,138 INFO L82 PathProgramCache]: Analyzing trace with hash 341466613, now seen corresponding path program 1 times [2020-09-25 04:36:25,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:25,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836171830] [2020-09-25 04:36:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:25,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:25,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:25,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 04:36:25,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 04:36:25,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:25,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:36:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:36:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:36:25,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:36:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:25,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:36:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:36:25,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:25,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:36:25,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836171830] [2020-09-25 04:36:25,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:36:25,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:36:25,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201497738] [2020-09-25 04:36:25,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:36:25,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:25,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:36:25,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:36:25,570 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-09-25 04:36:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:25,704 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-09-25 04:36:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:36:25,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-09-25 04:36:25,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:25,724 INFO L225 Difference]: With dead ends: 51 [2020-09-25 04:36:25,724 INFO L226 Difference]: Without dead ends: 27 [2020-09-25 04:36:25,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:36:25,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-25 04:36:25,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-09-25 04:36:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 04:36:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-25 04:36:25,779 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 21 [2020-09-25 04:36:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:25,780 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-25 04:36:25,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:36:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-25 04:36:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 04:36:25,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:25,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:25,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:36:25,783 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash 178703795, now seen corresponding path program 1 times [2020-09-25 04:36:25,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:25,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416902007] [2020-09-25 04:36:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:25,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:26,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:36:26,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:36:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 04:36:26,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:26,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:36:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:36:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:36:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 04:36:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:26,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:26,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:36:26,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:36:26,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:26,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:36:26,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416902007] [2020-09-25 04:36:26,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:36:26,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:36:26,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156482664] [2020-09-25 04:36:26,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:36:26,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:26,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:36:26,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:36:26,343 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-09-25 04:36:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:26,665 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-09-25 04:36:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:36:26,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-25 04:36:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:26,667 INFO L225 Difference]: With dead ends: 38 [2020-09-25 04:36:26,667 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 04:36:26,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:36:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 04:36:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-25 04:36:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 04:36:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-09-25 04:36:26,676 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-09-25 04:36:26,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:26,677 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-09-25 04:36:26,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:36:26,677 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-09-25 04:36:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 04:36:26,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:26,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:26,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:36:26,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:26,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash 563687025, now seen corresponding path program 2 times [2020-09-25 04:36:26,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:26,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700950200] [2020-09-25 04:36:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:27,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:27,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:36:27,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:36:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-25 04:36:27,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:27,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:36:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:36:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:36:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:36:27,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:27,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:27,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:36:27,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:27,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:36:27,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:27,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:27,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:36:27,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700950200] [2020-09-25 04:36:27,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:36:27,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 04:36:27,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549911729] [2020-09-25 04:36:27,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:36:27,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:27,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:36:27,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:36:27,264 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 9 states. [2020-09-25 04:36:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:27,474 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-09-25 04:36:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:36:27,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-09-25 04:36:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:27,475 INFO L225 Difference]: With dead ends: 30 [2020-09-25 04:36:27,475 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:36:27,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:36:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:36:27,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:36:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:36:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:36:27,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-25 04:36:27,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:27,478 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:36:27,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:36:27,478 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:36:27,478 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:36:27,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:36:27,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:36:27,614 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:36:27,615 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 04:36:27,615 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_144~0 |old(~__return_144~0)|)) [2020-09-25 04:36:27,615 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:36:27,616 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:36:27,616 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:36:27,617 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:36:27,617 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:36:27,617 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 04:36:27,617 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 04:36:27,617 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 04:36:27,618 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 04:36:27,618 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 04:36:27,618 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 04:36:27,618 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 04:36:27,619 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-09-25 04:36:27,619 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-09-25 04:36:27,620 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 04:36:27,620 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 04:36:27,620 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-09-25 04:36:27,621 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 04:36:27,621 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 04:36:27,621 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-09-25 04:36:27,621 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-09-25 04:36:27,621 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 04:36:27,621 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 04:36:27,622 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 04:36:27,625 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 04:36:27,626 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-09-25 04:36:27,626 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_144~0)| ~__return_144~0) [2020-09-25 04:36:27,626 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 04:36:27,626 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 04:36:27,626 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 04:36:27,627 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 04:36:27,628 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 04:36:27,629 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 04:36:27,629 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 04:36:27,629 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 04:36:27,630 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse0 (= |old(~__return_144~0)| ~__return_144~0))) (or (and .cse0 (<= (+ main_~main__x~0 50) 0)) (and (<= (+ main_~main__x~0 2) main_~main__y~0) .cse0))) [2020-09-25 04:36:27,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:36:27 BoogieIcfgContainer [2020-09-25 04:36:27,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:36:27,669 INFO L168 Benchmark]: Toolchain (without parser) took 3412.51 ms. Allocated memory was 146.3 MB in the beginning and 235.4 MB in the end (delta: 89.1 MB). Free memory was 101.8 MB in the beginning and 124.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,670 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:36:27,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.35 ms. Allocated memory is still 146.3 MB. Free memory was 101.1 MB in the beginning and 91.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,683 INFO L168 Benchmark]: Boogie Preprocessor took 122.62 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 180.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,685 INFO L168 Benchmark]: RCFGBuilder took 316.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 167.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,688 INFO L168 Benchmark]: TraceAbstraction took 2643.91 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 124.0 MB in the end (delta: 42.4 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,697 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.35 ms. Allocated memory is still 146.3 MB. Free memory was 101.1 MB in the beginning and 91.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.62 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 180.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 167.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2643.91 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 124.0 MB in the end (delta: 42.4 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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: 28]: Loop Invariant Derived loop invariant: (\old(__return_144) == __return_144 && main__x + 50 <= 0) || (main__x + 2 <= main__y && \old(__return_144) == __return_144) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 106 SDslu, 83 SDs, 0 SdLazy, 234 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 31 HoareAnnotationTreeSize, 5 FomulaSimplifications, 17 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 4756 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/7 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...