/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:02:25,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:02:25,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:02:25,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:02:25,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:02:25,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:02:25,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:02:25,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:02:25,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:02:25,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:02:25,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:02:25,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:02:25,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:02:26,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:02:26,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:02:26,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:02:26,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:02:26,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:02:26,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:02:26,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:02:26,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:02:26,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:02:26,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:02:26,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:02:26,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:02:26,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:02:26,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:02:26,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:02:26,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:02:26,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:02:26,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:02:26,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:02:26,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:02:26,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:02:26,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:02:26,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:02:26,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:02:26,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:02:26,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:02:26,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:02:26,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:02:26,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:02:26,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:02:26,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:02:26,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:02:26,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:02:26,098 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:02:26,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:02:26,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:02:26,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:02:26,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:02:26,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:02:26,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:02:26,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:02:26,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:02:26,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:02:26,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:02:26,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:02:26,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:02:26,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:02:26,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:02:26,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:02:26,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:02:26,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:02:26,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:02:26,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:02:26,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:02:26,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:02:26,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:02:26,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:02:26,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:02:26,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:02:26,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:02:26,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:02:26,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:02:26,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:02:26,578 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:02:26,579 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2020-09-25 08:02:26,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3324ee663/e059a47a63e44398b12e49a5087c6b4b/FLAGb988533e0 [2020-09-25 08:02:27,207 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:02:27,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_build.i [2020-09-25 08:02:27,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3324ee663/e059a47a63e44398b12e49a5087c6b4b/FLAGb988533e0 [2020-09-25 08:02:27,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3324ee663/e059a47a63e44398b12e49a5087c6b4b [2020-09-25 08:02:27,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:02:27,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:02:27,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:02:27,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:02:27,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:02:27,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27, skipping insertion in model container [2020-09-25 08:02:27,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:02:27,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:02:27,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:02:27,845 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:02:27,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:02:27,885 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:02:27,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27 WrapperNode [2020-09-25 08:02:27,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:02:27,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:02:27,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:02:27,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:02:27,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (1/1) ... [2020-09-25 08:02:27,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:02:27,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:02:27,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:02:27,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:02:27,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:02:28,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:02:28,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:02:28,067 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:02:28,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:02:28,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:02:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:02:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:02:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:02:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:02:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:02:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:02:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:02:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:02:28,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:02:28,303 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:02:28,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:02:28 BoogieIcfgContainer [2020-09-25 08:02:28,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:02:28,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:02:28,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:02:28,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:02:28,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:02:27" (1/3) ... [2020-09-25 08:02:28,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3d18ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:02:28, skipping insertion in model container [2020-09-25 08:02:28,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:27" (2/3) ... [2020-09-25 08:02:28,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3d18ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:02:28, skipping insertion in model container [2020-09-25 08:02:28,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:02:28" (3/3) ... [2020-09-25 08:02:28,324 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-09-25 08:02:28,341 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:02:28,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:02:28,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:02:28,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:02:28,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:02:28,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:02:28,437 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:02:28,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:02:28,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:02:28,437 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:02:28,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:02:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 08:02:28,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 08:02:28,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:28,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:28,470 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:28,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2141903635, now seen corresponding path program 1 times [2020-09-25 08:02:28,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:28,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061811949] [2020-09-25 08:02:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 08:02:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 08:02:28,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:28,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:28,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:02:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:02:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:02:28,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:02:28,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:28,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:28,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:28,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:02:28,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:28,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:02:28,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061811949] [2020-09-25 08:02:28,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:28,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:02:28,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671677252] [2020-09-25 08:02:28,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:02:28,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:28,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:02:28,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:02:28,888 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-09-25 08:02:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:29,005 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-09-25 08:02:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:02:29,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 08:02:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:29,019 INFO L225 Difference]: With dead ends: 60 [2020-09-25 08:02:29,019 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 08:02:29,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:02:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 08:02:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 08:02:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 08:02:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 08:02:29,067 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 19 [2020-09-25 08:02:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:29,068 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 08:02:29,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:02:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 08:02:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 08:02:29,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:29,069 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:29,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:02:29,070 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:29,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1520201371, now seen corresponding path program 1 times [2020-09-25 08:02:29,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:29,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345139169] [2020-09-25 08:02:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:29,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:29,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:29,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:02:29,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:29,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 08:02:29,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:29,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:29,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:02:29,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:02:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:02:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:29,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:29,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:29,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:29,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:02:29,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:29,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:29,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:02:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:29,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:29,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:29,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:29,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:02:29,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:29,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:29,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:02:29,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345139169] [2020-09-25 08:02:29,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:29,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:02:29,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768223806] [2020-09-25 08:02:29,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:02:29,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:29,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:02:29,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:02:29,349 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2020-09-25 08:02:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:29,425 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-09-25 08:02:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:02:29,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 08:02:29,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:29,428 INFO L225 Difference]: With dead ends: 49 [2020-09-25 08:02:29,428 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 08:02:29,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:02:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 08:02:29,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-25 08:02:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 08:02:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-09-25 08:02:29,457 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 24 [2020-09-25 08:02:29,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:29,458 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-09-25 08:02:29,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:02:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-09-25 08:02:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 08:02:29,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:29,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:29,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:02:29,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:29,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:29,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1589830701, now seen corresponding path program 1 times [2020-09-25 08:02:29,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:29,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854667386] [2020-09-25 08:02:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:29,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:29,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:02:29,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:29,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 08:02:29,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:29,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:02:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:02:29,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:29,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:29,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:29,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:29,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:29,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:29,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 08:02:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:29,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:29,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:29,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:29,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:02:29,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:29,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:02:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:02:29,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854667386] [2020-09-25 08:02:29,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:29,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:02:29,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294731619] [2020-09-25 08:02:29,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:02:29,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:29,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:02:29,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:02:29,785 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 3 states. [2020-09-25 08:02:29,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:29,813 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-09-25 08:02:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:02:29,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-25 08:02:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:29,828 INFO L225 Difference]: With dead ends: 76 [2020-09-25 08:02:29,828 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 08:02:29,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:02:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 08:02:29,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-09-25 08:02:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 08:02:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-25 08:02:29,843 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-25 08:02:29,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:29,844 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-25 08:02:29,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:02:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-25 08:02:29,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 08:02:29,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:29,846 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:29,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:02:29,846 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:29,847 INFO L82 PathProgramCache]: Analyzing trace with hash 156681780, now seen corresponding path program 1 times [2020-09-25 08:02:29,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:29,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090153850] [2020-09-25 08:02:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:29,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:30,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:30,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 08:02:30,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:02:30,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-09-25 08:02:30,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:30,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:02:30,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:02:30,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 08:02:30,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 08:02:30,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:30,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:30,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:30,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:30,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:02:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:30,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 08:02:30,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:30,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:30,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:30,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 08:02:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:30,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:30,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:30,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:30,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:02:30,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:30,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:30,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 08:02:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:30,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:30,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:30,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:02:30,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:30,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:30,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 08:02:30,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090153850] [2020-09-25 08:02:30,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:30,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:02:30,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114186375] [2020-09-25 08:02:30,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:02:30,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:30,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:02:30,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:02:30,954 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 7 states. [2020-09-25 08:02:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:31,107 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-09-25 08:02:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:02:31,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-09-25 08:02:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:31,111 INFO L225 Difference]: With dead ends: 67 [2020-09-25 08:02:31,111 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 08:02:31,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:02:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 08:02:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-09-25 08:02:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 08:02:31,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-09-25 08:02:31,125 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 44 [2020-09-25 08:02:31,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:31,126 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-09-25 08:02:31,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:02:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-09-25 08:02:31,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 08:02:31,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:31,129 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:31,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:02:31,129 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash 928415107, now seen corresponding path program 2 times [2020-09-25 08:02:31,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:31,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349494773] [2020-09-25 08:02:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:31,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:31,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:36,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:36,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:02:36,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:02:36,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 08:02:36,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:36,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:02:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 08:02:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:36,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:36,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:36,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:36,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:36,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:36,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:36,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:36,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:02:36,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:02:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:36,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:36,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:36,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:36,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:36,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:36,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:36,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 08:02:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:36,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:36,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:36,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:36,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:36,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:36,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:36,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 08:02:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:36,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:36,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:36,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:36,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:02:36,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:36,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:02:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:02:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:36,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:36,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:02:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:36,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:02:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:36,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 08:02:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:36,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:36,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:36,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:02:36,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:36,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:02:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:36,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 08:02:36,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349494773] [2020-09-25 08:02:36,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:36,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 08:02:36,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613182603] [2020-09-25 08:02:36,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:02:36,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:36,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:02:36,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:02:36,295 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 5 states. [2020-09-25 08:02:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:36,401 INFO L93 Difference]: Finished difference Result 131 states and 154 transitions. [2020-09-25 08:02:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:02:36,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-09-25 08:02:36,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:36,407 INFO L225 Difference]: With dead ends: 131 [2020-09-25 08:02:36,408 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 08:02:36,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:02:36,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 08:02:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-09-25 08:02:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 08:02:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-09-25 08:02:36,442 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 64 [2020-09-25 08:02:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:36,445 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-09-25 08:02:36,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:02:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-09-25 08:02:36,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 08:02:36,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:36,452 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:36,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:02:36,453 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:36,453 INFO L82 PathProgramCache]: Analyzing trace with hash 256669765, now seen corresponding path program 3 times [2020-09-25 08:02:36,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:36,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309985436] [2020-09-25 08:02:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 08:02:41,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:02:41,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:02:41,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:02:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:02:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 08:02:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:02:41,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:41,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:41,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:41,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:02:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 08:02:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:02:41,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:02:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:41,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:02:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:41,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 08:02:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:41,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 08:02:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:41,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 08:02:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:41,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 08:02:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:41,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:02:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:41,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:41,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:41,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:41,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:02:41,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:41,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 51 proven. 10 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-09-25 08:02:41,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309985436] [2020-09-25 08:02:41,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:41,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:02:41,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585680928] [2020-09-25 08:02:41,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:02:41,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:41,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:02:41,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:02:41,821 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 8 states. [2020-09-25 08:02:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:41,988 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-09-25 08:02:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:02:41,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-09-25 08:02:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:41,992 INFO L225 Difference]: With dead ends: 81 [2020-09-25 08:02:41,992 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 08:02:41,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:02:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 08:02:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 08:02:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 08:02:41,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 08:02:41,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2020-09-25 08:02:41,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:41,999 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 08:02:42,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:02:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 08:02:42,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 08:02:42,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:02:42,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 08:02:42,281 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 08:02:42,281 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:02:42,282 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:02:42,282 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 08:02:42,282 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 08:02:42,282 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 08:02:42,282 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:02:42,282 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:02:42,282 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 08:02:42,283 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 08:02:42,283 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:02:42,283 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 23) no Hoare annotation was computed. [2020-09-25 08:02:42,283 INFO L268 CegarLoopResult]: For program point L19(lines 17 20) no Hoare annotation was computed. [2020-09-25 08:02:42,283 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 08:02:42,283 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 08:02:42,283 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 08:02:42,283 INFO L268 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-09-25 08:02:42,284 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 08:02:42,284 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 23) no Hoare annotation was computed. [2020-09-25 08:02:42,284 INFO L264 CegarLoopResult]: At program point L17-5(lines 17 20) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-09-25 08:02:42,284 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-09-25 08:02:42,284 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-09-25 08:02:42,284 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-09-25 08:02:42,285 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 08:02:42,285 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 08:02:42,285 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 08:02:42,285 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 21) no Hoare annotation was computed. [2020-09-25 08:02:42,285 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 08:02:42,285 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-25 08:02:42,285 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-25 08:02:42,285 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-25 08:02:42,286 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 21) the Hoare annotation is: (<= 0 main_~i~0) [2020-09-25 08:02:42,286 INFO L268 CegarLoopResult]: For program point L16-7(lines 16 21) no Hoare annotation was computed. [2020-09-25 08:02:42,286 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 08:02:42,286 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 08:02:42,286 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 08:02:42,286 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 08:02:42,286 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 08:02:42,287 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 08:02:42,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:02:42 BoogieIcfgContainer [2020-09-25 08:02:42,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:02:42,327 INFO L168 Benchmark]: Toolchain (without parser) took 14754.56 ms. Allocated memory was 139.5 MB in the beginning and 325.6 MB in the end (delta: 186.1 MB). Free memory was 102.7 MB in the beginning and 154.1 MB in the end (delta: -51.4 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:02:42,328 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:02:42,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.05 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:02:42,339 INFO L168 Benchmark]: Boogie Preprocessor took 110.37 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 182.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:02:42,340 INFO L168 Benchmark]: RCFGBuilder took 312.93 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 167.6 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:02:42,347 INFO L168 Benchmark]: TraceAbstraction took 14005.60 ms. Allocated memory was 202.9 MB in the beginning and 325.6 MB in the end (delta: 122.7 MB). Free memory was 167.6 MB in the beginning and 154.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 136.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:02:42,358 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.05 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.37 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 182.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 312.93 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 167.6 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14005.60 ms. Allocated memory was 202.9 MB in the beginning and 325.6 MB in the end (delta: 122.7 MB). Free memory was 167.6 MB in the beginning and 154.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 136.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 <= i && i < nlen - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.5s, OverallIterations: 6, TraceHistogramMax: 10, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 202 SDtfs, 43 SDslu, 529 SDs, 0 SdLazy, 171 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 28 PreInvPairs, 46 NumberOfFragments, 29 HoareAnnotationTreeSize, 28 FomulaSimplifications, 304 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 131 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 267 ConstructedInterpolants, 0 QuantifiedInterpolants, 27153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 323/340 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...