/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-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:20:10,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:20:10,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:20:10,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:20:10,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:20:10,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:20:10,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:20:10,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:20:10,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:20:10,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:20:10,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:20:10,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:20:10,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:20:10,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:20:10,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:20:10,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:20:10,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:20:10,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:20:10,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:20:10,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:20:10,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:20:10,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:20:10,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:20:10,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:20:10,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:20:10,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:20:10,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:20:10,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:20:10,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:20:10,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:20:10,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:20:10,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:20:10,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:20:10,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:20:10,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:20:10,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:20:10,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:20:10,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:20:10,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:20:10,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:20:10,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:20:10,321 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 05:20:10,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:20:10,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:20:10,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:20:10,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:20:10,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:20:10,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:20:10,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:20:10,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:20:10,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:20:10,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:20:10,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:20:10,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:20:10,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:20:10,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:20:10,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:20:10,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:20:10,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:20:10,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:20:10,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:20:10,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:20:10,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:20:10,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:20:10,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:20:10,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:20:10,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:20:10,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:20:10,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:20:10,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:20:10,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:20:10,350 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 05:20:10,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:20:10,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:20:10,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:20:10,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:20:10,685 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:20:10,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007.i [2020-10-14 05:20:10,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d67028c7/57994cb8e7f943e7b06def99f71f9285/FLAGe3d2f744b [2020-10-14 05:20:11,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:20:11,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/bhmr2007.i [2020-10-14 05:20:11,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d67028c7/57994cb8e7f943e7b06def99f71f9285/FLAGe3d2f744b [2020-10-14 05:20:11,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d67028c7/57994cb8e7f943e7b06def99f71f9285 [2020-10-14 05:20:11,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:20:11,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:20:11,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:20:11,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:20:11,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:20:11,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74990c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11, skipping insertion in model container [2020-10-14 05:20:11,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:20:11,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:20:11,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:20:11,840 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:20:11,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:20:11,870 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:20:11,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11 WrapperNode [2020-10-14 05:20:11,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:20:11,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:20:11,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:20:11,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:20:11,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (1/1) ... [2020-10-14 05:20:11,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:20:11,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:20:11,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:20:11,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:20:11,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (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 05:20:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:20:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:20:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:20:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:20:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:20:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:20:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:20:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:20:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:20:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:20:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:20:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:20:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:20:12,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:20:12,253 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:20:12,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:20:12 BoogieIcfgContainer [2020-10-14 05:20:12,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:20:12,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:20:12,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:20:12,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:20:12,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:20:11" (1/3) ... [2020-10-14 05:20:12,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ebfa0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:20:12, skipping insertion in model container [2020-10-14 05:20:12,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:20:11" (2/3) ... [2020-10-14 05:20:12,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ebfa0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:20:12, skipping insertion in model container [2020-10-14 05:20:12,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:20:12" (3/3) ... [2020-10-14 05:20:12,265 INFO L109 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2020-10-14 05:20:12,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:20:12,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:20:12,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:20:12,325 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:20:12,325 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:20:12,325 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:20:12,325 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:20:12,325 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:20:12,326 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:20:12,326 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:20:12,326 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:20:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-14 05:20:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 05:20:12,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:12,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:12,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:12,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1473011041, now seen corresponding path program 1 times [2020-10-14 05:20:12,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:12,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289262058] [2020-10-14 05:20:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:12,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:12,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:20:12,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:12,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 05:20:12,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:12,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:12,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:12,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:20:12,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:12,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:20:12,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:12,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:12,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:12,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:20:12,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:12,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:12,535 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 05:20:12,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289262058] [2020-10-14 05:20:12,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:20:12,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 05:20:12,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081771558] [2020-10-14 05:20:12,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 05:20:12,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:12,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 05:20:12,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:20:12,556 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-14 05:20:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:12,575 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-14 05:20:12,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 05:20:12,576 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-14 05:20:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:12,583 INFO L225 Difference]: With dead ends: 33 [2020-10-14 05:20:12,583 INFO L226 Difference]: Without dead ends: 14 [2020-10-14 05:20:12,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:20:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-14 05:20:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-14 05:20:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-14 05:20:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-10-14 05:20:12,620 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-10-14 05:20:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:12,620 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-10-14 05:20:12,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 05:20:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-10-14 05:20:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 05:20:12,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:12,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:12,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:20:12,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:12,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:12,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1462852310, now seen corresponding path program 1 times [2020-10-14 05:20:12,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:12,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496001731] [2020-10-14 05:20:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:12,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:12,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:20:12,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 05:20:12,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:12,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:20:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:20:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:20:12,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:20:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:13,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:13,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:13,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:13,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:20:13,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:13,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:13,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:13,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:13,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:13,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:13,086 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 05:20:13,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496001731] [2020-10-14 05:20:13,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:20:13,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:20:13,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011175446] [2020-10-14 05:20:13,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:20:13,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:13,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:20:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:20:13,091 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-10-14 05:20:13,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:13,245 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-14 05:20:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:20:13,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-14 05:20:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:13,248 INFO L225 Difference]: With dead ends: 21 [2020-10-14 05:20:13,249 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 05:20:13,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:20:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 05:20:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-14 05:20:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 05:20:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-14 05:20:13,256 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-10-14 05:20:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:13,256 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-14 05:20:13,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:20:13,257 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-14 05:20:13,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 05:20:13,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:13,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:13,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:20:13,258 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:13,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:13,259 INFO L82 PathProgramCache]: Analyzing trace with hash 467761921, now seen corresponding path program 1 times [2020-10-14 05:20:13,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:13,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225433655] [2020-10-14 05:20:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:13,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:13,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:20:13,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:13,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 05:20:13,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:13,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:20:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:20:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:20:13,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:13,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:13,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:13,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:13,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:13,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:20:13,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:13,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:13,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:13,622 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 05:20:13,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225433655] [2020-10-14 05:20:13,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:20:13,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:20:13,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920809320] [2020-10-14 05:20:13,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:20:13,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:13,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:20:13,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:20:13,625 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 9 states. [2020-10-14 05:20:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:13,722 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-14 05:20:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:20:13,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-14 05:20:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:13,724 INFO L225 Difference]: With dead ends: 24 [2020-10-14 05:20:13,724 INFO L226 Difference]: Without dead ends: 19 [2020-10-14 05:20:13,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:20:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-14 05:20:13,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-14 05:20:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 05:20:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-14 05:20:13,731 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2020-10-14 05:20:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:13,731 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-14 05:20:13,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:20:13,732 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-14 05:20:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:20:13,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:20:13,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:20:13,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:20:13,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:20:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:20:13,734 INFO L82 PathProgramCache]: Analyzing trace with hash -405739786, now seen corresponding path program 2 times [2020-10-14 05:20:13,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:20:13,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384026750] [2020-10-14 05:20:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:20:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:13,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:13,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:20:13,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:13,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 05:20:13,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:13,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:20:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:20:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:20:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:20:14,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:20:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:20:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:20:14,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:20:14,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:20:14,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:20:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:20:14,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:20:14,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:20:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:20:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:20:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:20:14,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:20:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:20:14,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384026750] [2020-10-14 05:20:14,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:20:14,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:20:14,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843459508] [2020-10-14 05:20:14,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:20:14,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:20:14,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:20:14,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:20:14,101 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 10 states. [2020-10-14 05:20:14,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:20:14,261 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-10-14 05:20:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:20:14,261 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-14 05:20:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:20:14,262 INFO L225 Difference]: With dead ends: 18 [2020-10-14 05:20:14,262 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:20:14,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:20:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:20:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:20:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:20:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:20:14,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-14 05:20:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:20:14,264 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:20:14,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:20:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:20:14,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:20:14,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:20:14,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:20:14,322 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:20:14,322 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:20:14,322 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:20:14,322 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:20:14,323 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:20:14,323 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:20:14,323 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:20:14,323 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 05:20:14,323 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:20:14,323 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:20:14,323 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 29) the Hoare annotation is: true [2020-10-14 05:20:14,324 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-10-14 05:20:14,324 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 29) no Hoare annotation was computed. [2020-10-14 05:20:14,324 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-10-14 05:20:14,324 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-14 05:20:14,324 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 24) no Hoare annotation was computed. [2020-10-14 05:20:14,325 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 26) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 (* 3 main_~n~0)) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2020-10-14 05:20:14,325 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 26) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-10-14 05:20:14,325 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 29) no Hoare annotation was computed. [2020-10-14 05:20:14,325 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 05:20:14,325 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:20:14,325 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 05:20:14,326 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 05:20:14,326 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:20:14,326 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 05:20:14,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:20:14 BoogieIcfgContainer [2020-10-14 05:20:14,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:20:14,348 INFO L168 Benchmark]: Toolchain (without parser) took 2735.73 ms. Allocated memory was 146.8 MB in the beginning and 233.8 MB in the end (delta: 87.0 MB). Free memory was 103.7 MB in the beginning and 115.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:14,349 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 05:20:14,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.64 ms. Allocated memory is still 146.8 MB. Free memory was 103.2 MB in the beginning and 93.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:14,352 INFO L168 Benchmark]: Boogie Preprocessor took 119.12 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 93.9 MB in the beginning and 183.1 MB in the end (delta: -89.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:14,352 INFO L168 Benchmark]: RCFGBuilder took 266.22 ms. Allocated memory is still 203.4 MB. Free memory was 183.1 MB in the beginning and 169.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:14,354 INFO L168 Benchmark]: TraceAbstraction took 2086.96 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 169.6 MB in the beginning and 115.9 MB in the end (delta: 53.7 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:20:14,358 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.64 ms. Allocated memory is still 146.8 MB. Free memory was 103.2 MB in the beginning and 93.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.12 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 93.9 MB in the beginning and 183.1 MB in the end (delta: -89.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.22 ms. Allocated memory is still 203.4 MB. Free memory was 183.1 MB in the beginning and 169.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2086.96 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 169.6 MB in the beginning and 115.9 MB in the end (delta: 53.7 MB). Peak memory consumption was 84.1 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: 17]: Loop Invariant Derived loop invariant: (a + b <= 3 * n && 3 * i <= a + b) && a + b <= 3 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 11 SDslu, 115 SDs, 0 SdLazy, 134 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 42 HoareAnnotationTreeSize, 10 FomulaSimplifications, 65 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 4828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/6 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...