/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/float-benchs/drift_tenth.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:43:07,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:43:07,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:43:07,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:43:07,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:43:07,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:43:07,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:43:07,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:43:07,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:43:07,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:43:07,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:43:07,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:43:07,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:43:07,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:43:07,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:43:07,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:43:07,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:43:07,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:43:07,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:43:07,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:43:07,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:43:07,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:43:07,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:43:07,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:43:07,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:43:07,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:43:07,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:43:07,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:43:07,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:43:07,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:43:07,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:43:07,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:43:07,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:43:07,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:43:07,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:43:07,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:43:07,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:43:07,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:43:07,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:43:07,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:43:07,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:43:07,369 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 04:43:07,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:43:07,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:43:07,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:43:07,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:43:07,412 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:43:07,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:43:07,413 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:43:07,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:43:07,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:43:07,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:43:07,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:43:07,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:43:07,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:43:07,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:43:07,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:43:07,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:43:07,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:43:07,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:43:07,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:43:07,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:43:07,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:43:07,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:43:07,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:43:07,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:43:07,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:43:07,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:43:07,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:43:07,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:43:07,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:43:07,419 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 04:43:07,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:43:07,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:43:07,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:43:07,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:43:07,788 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:43:07,789 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/drift_tenth.c [2020-10-14 04:43:07,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17d69542a/acec2d2ada6f488c89e7cbf2129f0753/FLAGb341cbb20 [2020-10-14 04:43:08,248 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:43:08,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/drift_tenth.c [2020-10-14 04:43:08,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17d69542a/acec2d2ada6f488c89e7cbf2129f0753/FLAGb341cbb20 [2020-10-14 04:43:08,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17d69542a/acec2d2ada6f488c89e7cbf2129f0753 [2020-10-14 04:43:08,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:43:08,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:43:08,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:43:08,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:43:08,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:43:08,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:08,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8d6227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08, skipping insertion in model container [2020-10-14 04:43:08,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:08,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:43:08,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:43:08,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:43:08,868 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:43:08,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:43:08,901 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:43:08,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08 WrapperNode [2020-10-14 04:43:08,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:43:08,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:43:08,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:43:08,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:43:08,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:08,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:09,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:09,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:09,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:09,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:09,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (1/1) ... [2020-10-14 04:43:09,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:43:09,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:43:09,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:43:09,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:43:09,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (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 04:43:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:43:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:43:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 04:43:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:43:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:43:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 04:43:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:43:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:43:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:43:09,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:43:09,320 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:43:09,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:43:09 BoogieIcfgContainer [2020-10-14 04:43:09,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:43:09,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:43:09,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:43:09,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:43:09,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:43:08" (1/3) ... [2020-10-14 04:43:09,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5443e57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:43:09, skipping insertion in model container [2020-10-14 04:43:09,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:43:08" (2/3) ... [2020-10-14 04:43:09,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5443e57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:43:09, skipping insertion in model container [2020-10-14 04:43:09,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:43:09" (3/3) ... [2020-10-14 04:43:09,334 INFO L109 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2020-10-14 04:43:09,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:43:09,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:43:09,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:43:09,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:43:09,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:43:09,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:43:09,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:43:09,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:43:09,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:43:09,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:43:09,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:43:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-14 04:43:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 04:43:09,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:09,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:09,417 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:09,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:09,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2020-10-14 04:43:09,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:09,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225433665] [2020-10-14 04:43:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:09,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:09,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:43:09,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:43:09,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:09,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:43:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:43:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:09,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:09,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:09,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:43:09,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:09,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:09,615 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 04:43:09,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225433665] [2020-10-14 04:43:09,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:43:09,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 04:43:09,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604819857] [2020-10-14 04:43:09,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 04:43:09,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:09,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 04:43:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 04:43:09,643 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-14 04:43:09,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:09,663 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-10-14 04:43:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 04:43:09,664 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-14 04:43:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:09,671 INFO L225 Difference]: With dead ends: 31 [2020-10-14 04:43:09,672 INFO L226 Difference]: Without dead ends: 12 [2020-10-14 04:43:09,675 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 04:43:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-14 04:43:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-14 04:43:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-14 04:43:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-14 04:43:09,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-14 04:43:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:09,715 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-14 04:43:09,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 04:43:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-14 04:43:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 04:43:09,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:09,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:09,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:43:09,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:09,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:09,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1877050693, now seen corresponding path program 1 times [2020-10-14 04:43:09,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:09,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977365791] [2020-10-14 04:43:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:09,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:09,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:43:09,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 04:43:09,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:09,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:43:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:43:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:43:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:09,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:43:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:09,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:43:09,879 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 04:43:09,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977365791] [2020-10-14 04:43:09,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:43:09,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:43:09,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921254502] [2020-10-14 04:43:09,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:43:09,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:09,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:43:09,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:43:09,889 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-10-14 04:43:09,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:09,932 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-14 04:43:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:43:09,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 04:43:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:09,934 INFO L225 Difference]: With dead ends: 19 [2020-10-14 04:43:09,935 INFO L226 Difference]: Without dead ends: 14 [2020-10-14 04:43:09,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:43:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-14 04:43:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-14 04:43:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-14 04:43:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-14 04:43:09,944 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-14 04:43:09,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:09,945 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-14 04:43:09,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:43:09,945 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-14 04:43:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 04:43:09,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:09,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:09,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:43:09,948 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:09,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:09,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1175909113, now seen corresponding path program 1 times [2020-10-14 04:43:09,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:09,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685678615] [2020-10-14 04:43:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:43:10,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 04:43:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:43:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:43:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:10,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:10,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:43:10,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:43:10,160 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 04:43:10,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685678615] [2020-10-14 04:43:10,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:10,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 04:43:10,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381998390] [2020-10-14 04:43:10,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:43:10,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:10,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:43:10,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:43:10,173 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-10-14 04:43:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:10,246 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-14 04:43:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:43:10,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 04:43:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:10,248 INFO L225 Difference]: With dead ends: 21 [2020-10-14 04:43:10,249 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 04:43:10,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:43:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 04:43:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-14 04:43:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 04:43:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-14 04:43:10,254 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-10-14 04:43:10,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:10,255 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-14 04:43:10,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:43:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-14 04:43:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:43:10,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:10,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:10,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:43:10,257 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:10,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1607619511, now seen corresponding path program 2 times [2020-10-14 04:43:10,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:10,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693016797] [2020-10-14 04:43:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:43:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 04:43:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:43:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:43:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:10,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:43:10,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:10,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:10,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693016797] [2020-10-14 04:43:10,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:10,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:43:10,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476794921] [2020-10-14 04:43:10,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:43:10,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:10,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:43:10,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:43:10,376 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-14 04:43:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:10,408 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-14 04:43:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:43:10,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-14 04:43:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:10,410 INFO L225 Difference]: With dead ends: 23 [2020-10-14 04:43:10,410 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 04:43:10,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:43:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 04:43:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-14 04:43:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 04:43:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-14 04:43:10,418 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-14 04:43:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:10,418 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-14 04:43:10,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:43:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-14 04:43:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 04:43:10,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:10,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:10,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:43:10,420 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash -130515723, now seen corresponding path program 3 times [2020-10-14 04:43:10,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:10,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429207522] [2020-10-14 04:43:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:43:10,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:43:10,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:43:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:43:10,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:10,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:10,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:43:10,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:10,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429207522] [2020-10-14 04:43:10,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:10,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:43:10,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269965418] [2020-10-14 04:43:10,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:43:10,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:10,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:43:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:43:10,532 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-10-14 04:43:10,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:10,566 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-14 04:43:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:43:10,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 04:43:10,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:10,568 INFO L225 Difference]: With dead ends: 25 [2020-10-14 04:43:10,568 INFO L226 Difference]: Without dead ends: 20 [2020-10-14 04:43:10,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:43:10,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-14 04:43:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-14 04:43:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 04:43:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-14 04:43:10,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-14 04:43:10,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:10,575 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-14 04:43:10,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:43:10,575 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-14 04:43:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:43:10,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:10,577 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:10,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:43:10,577 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:10,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash 263802547, now seen corresponding path program 4 times [2020-10-14 04:43:10,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:10,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429397179] [2020-10-14 04:43:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:43:10,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:43:10,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:43:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:43:10,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:10,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:43:10,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:10,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:10,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429397179] [2020-10-14 04:43:10,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:10,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:43:10,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557655918] [2020-10-14 04:43:10,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:43:10,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:10,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:43:10,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:43:10,768 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-14 04:43:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:10,806 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-14 04:43:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:43:10,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-14 04:43:10,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:10,807 INFO L225 Difference]: With dead ends: 27 [2020-10-14 04:43:10,808 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 04:43:10,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:43:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 04:43:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-14 04:43:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 04:43:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-14 04:43:10,814 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-10-14 04:43:10,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:10,815 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-14 04:43:10,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:43:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-14 04:43:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:43:10,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:10,816 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:10,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:43:10,817 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:10,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1246537969, now seen corresponding path program 5 times [2020-10-14 04:43:10,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:10,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341635262] [2020-10-14 04:43:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:43:10,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:43:10,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:43:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:43:10,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:43:10,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:10,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:10,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:43:10,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:10,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:10,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:10,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341635262] [2020-10-14 04:43:10,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:10,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:43:10,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633170943] [2020-10-14 04:43:10,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:43:10,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:10,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:43:10,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:43:10,947 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-10-14 04:43:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:10,985 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-14 04:43:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:43:10,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-14 04:43:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:10,986 INFO L225 Difference]: With dead ends: 29 [2020-10-14 04:43:10,986 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 04:43:10,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:43:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 04:43:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-14 04:43:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 04:43:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-14 04:43:10,992 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-10-14 04:43:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:10,993 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-14 04:43:10,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:43:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-14 04:43:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:43:10,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:10,994 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:10,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:43:10,994 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:10,995 INFO L82 PathProgramCache]: Analyzing trace with hash 762473391, now seen corresponding path program 6 times [2020-10-14 04:43:10,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:10,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235010859] [2020-10-14 04:43:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:11,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:11,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:43:11,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:43:11,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:11,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:43:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:43:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:43:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:11,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:11,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:11,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:43:11,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:11,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:43:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:11,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235010859] [2020-10-14 04:43:11,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:11,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:43:11,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036300581] [2020-10-14 04:43:11,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:43:11,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:11,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:43:11,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:43:11,143 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-10-14 04:43:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:11,185 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-14 04:43:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:43:11,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-14 04:43:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:11,187 INFO L225 Difference]: With dead ends: 31 [2020-10-14 04:43:11,187 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 04:43:11,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:43:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 04:43:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-14 04:43:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 04:43:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-14 04:43:11,193 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-10-14 04:43:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:11,194 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-14 04:43:11,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:43:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-14 04:43:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:43:11,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:11,195 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:11,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:43:11,196 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:11,196 INFO L82 PathProgramCache]: Analyzing trace with hash -567118099, now seen corresponding path program 7 times [2020-10-14 04:43:11,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:11,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219457934] [2020-10-14 04:43:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:11,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:11,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:11,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:43:11,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 04:43:11,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:11,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:43:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:43:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:43:11,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:11,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:11,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:11,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:11,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:43:11,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:11,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:11,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219457934] [2020-10-14 04:43:11,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:11,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:43:11,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721536693] [2020-10-14 04:43:11,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:43:11,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:11,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:43:11,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:43:11,348 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-10-14 04:43:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:11,391 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-14 04:43:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:43:11,391 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-14 04:43:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:11,392 INFO L225 Difference]: With dead ends: 33 [2020-10-14 04:43:11,393 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 04:43:11,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:43:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 04:43:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 04:43:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 04:43:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-14 04:43:11,399 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-10-14 04:43:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:11,399 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-14 04:43:11,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:43:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-14 04:43:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:43:11,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:11,401 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:11,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:43:11,401 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:11,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1595714219, now seen corresponding path program 8 times [2020-10-14 04:43:11,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:11,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073578448] [2020-10-14 04:43:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:11,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:11,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:43:11,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 04:43:11,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:11,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:11,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:43:11,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:11,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:43:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:11,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:11,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:11,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:11,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:11,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:43:11,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:11,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:11,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073578448] [2020-10-14 04:43:11,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:11,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:43:11,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661483199] [2020-10-14 04:43:11,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:43:11,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:11,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:43:11,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:43:11,591 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2020-10-14 04:43:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:11,656 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-10-14 04:43:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:43:11,657 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-14 04:43:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:11,659 INFO L225 Difference]: With dead ends: 35 [2020-10-14 04:43:11,659 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 04:43:11,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:43:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 04:43:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 04:43:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 04:43:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-14 04:43:11,666 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-10-14 04:43:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:11,667 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-14 04:43:11,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:43:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-14 04:43:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:43:11,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:11,669 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:11,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:43:11,669 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1313400553, now seen corresponding path program 9 times [2020-10-14 04:43:11,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:11,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629542342] [2020-10-14 04:43:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:11,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:11,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:43:11,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 04:43:11,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:11,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:43:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:43:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:43:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:11,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:11,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:11,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 04:43:11,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:11,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:43:11,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:11,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:11,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:11,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:11,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629542342] [2020-10-14 04:43:11,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:11,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:43:11,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300567354] [2020-10-14 04:43:11,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:43:11,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:11,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:43:11,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:43:11,921 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-10-14 04:43:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:11,973 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-10-14 04:43:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:43:11,974 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-14 04:43:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:11,975 INFO L225 Difference]: With dead ends: 36 [2020-10-14 04:43:11,975 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 04:43:11,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:43:11,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 04:43:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 04:43:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 04:43:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-14 04:43:11,981 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-10-14 04:43:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:11,982 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-14 04:43:11,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:43:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-14 04:43:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:43:11,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:11,983 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:11,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:43:11,983 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:11,984 INFO L82 PathProgramCache]: Analyzing trace with hash 592907175, now seen corresponding path program 10 times [2020-10-14 04:43:11,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:11,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245054756] [2020-10-14 04:43:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:43:11,992 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:43:11,993 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:43:11,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:43:12,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:43:12 BoogieIcfgContainer [2020-10-14 04:43:12,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:43:12,020 INFO L168 Benchmark]: Toolchain (without parser) took 3376.16 ms. Allocated memory was 145.8 MB in the beginning and 245.4 MB in the end (delta: 99.6 MB). Free memory was 101.8 MB in the beginning and 182.1 MB in the end (delta: -80.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-10-14 04:43:12,021 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 04:43:12,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.83 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:43:12,023 INFO L168 Benchmark]: Boogie Preprocessor took 126.23 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 92.2 MB in the beginning and 181.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:43:12,024 INFO L168 Benchmark]: RCFGBuilder took 295.53 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 168.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:43:12,025 INFO L168 Benchmark]: TraceAbstraction took 2691.35 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 168.6 MB in the beginning and 182.1 MB in the end (delta: -13.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:43:12,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.83 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.23 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 92.2 MB in the beginning and 181.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 295.53 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 168.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2691.35 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 168.6 MB in the beginning and 182.1 MB in the end (delta: -13.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L8] float tick = 1.f / 10.f; [L9] float time = 0.f; [L10] int i; [L12] i = 0 [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND FALSE !(i < 10) [L15] CALL __VERIFIER_assert(time != 1.0) [L4] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 55 SDslu, 360 SDs, 0 SdLazy, 174 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=11, 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, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 7911 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/285 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...