/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:44,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:44,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:44,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:44,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:44,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:44,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:44,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:44,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:44,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:44,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:44,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:44,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:44,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:44,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:44,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:44,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:44,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:44,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:44,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:44,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:44,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:44,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:44,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:44,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:44,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:44,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:44,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:44,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:44,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:44,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:44,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:44,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:44,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:44,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:44,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:44,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:44,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:44,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:44,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:44,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:44,876 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 09:04:44,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:44,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:44,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:44,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:44,905 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:44,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:44,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:44,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:44,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:44,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:44,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:44,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:44,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:44,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:44,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:44,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:44,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:44,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:44,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:44,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:44,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:44,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:44,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:44,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:44,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:44,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:44,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:44,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:44,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:44,910 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:04:45,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:45,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:45,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:45,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:45,447 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:45,448 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 09:04:45,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a70c9da/8d687824ae56477f8dda288ac75936ee/FLAGa1f4c01cc [2020-09-25 09:04:46,210 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:46,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 09:04:46,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a70c9da/8d687824ae56477f8dda288ac75936ee/FLAGa1f4c01cc [2020-09-25 09:04:46,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a70c9da/8d687824ae56477f8dda288ac75936ee [2020-09-25 09:04:46,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:46,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:46,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:46,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:46,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:46,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46, skipping insertion in model container [2020-09-25 09:04:46,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:46,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:47,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:47,040 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:47,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:47,292 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:47,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47 WrapperNode [2020-09-25 09:04:47,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:47,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:47,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:47,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:47,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:47,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:47,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:47,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:47,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (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 09:04:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:49,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:49,127 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:49,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:49 BoogieIcfgContainer [2020-09-25 09:04:49,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:49,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:49,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:49,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:49,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:46" (1/3) ... [2020-09-25 09:04:49,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:49, skipping insertion in model container [2020-09-25 09:04:49,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47" (2/3) ... [2020-09-25 09:04:49,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:49, skipping insertion in model container [2020-09-25 09:04:49,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:49" (3/3) ... [2020-09-25 09:04:49,157 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 09:04:49,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:49,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:49,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:49,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:49,237 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:49,237 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:49,237 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:49,237 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:49,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:49,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:49,238 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:49,266 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:04:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 09:04:49,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:49,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:49,280 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 09:04:49,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:49,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856127885] [2020-09-25 09:04:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:50,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:50,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 09:04:50,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:04:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-09-25 09:04:50,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:50,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:04:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 09:04:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:04:50,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:50,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:50,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:04:50,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:50,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:04:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:50,651 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 09:04:50,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856127885] [2020-09-25 09:04:50,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:50,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:50,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643550808] [2020-09-25 09:04:50,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:50,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:50,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:50,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:50,684 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:04:52,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:52,792 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 09:04:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:52,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 09:04:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:52,818 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 09:04:52,818 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 09:04:52,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 09:04:52,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 09:04:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 09:04:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 09:04:52,927 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 64 [2020-09-25 09:04:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:52,928 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 09:04:52,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 09:04:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 09:04:52,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:52,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:52,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:52,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:52,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:52,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1704622095, now seen corresponding path program 1 times [2020-09-25 09:04:52,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:52,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751087362] [2020-09-25 09:04:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:56,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 09:04:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:04:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3537 [2020-09-25 09:04:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:56,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:04:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 09:04:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:56,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:04:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:56,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:04:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:56,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:04:56,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 09:04:56,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:56,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:04:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:57,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751087362] [2020-09-25 09:04:57,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:57,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:04:57,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375501102] [2020-09-25 09:04:57,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:57,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:57,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:57,008 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 7 states. [2020-09-25 09:04:59,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:59,535 INFO L93 Difference]: Finished difference Result 1074 states and 1509 transitions. [2020-09-25 09:04:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:04:59,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-09-25 09:04:59,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:59,544 INFO L225 Difference]: With dead ends: 1074 [2020-09-25 09:04:59,545 INFO L226 Difference]: Without dead ends: 1072 [2020-09-25 09:04:59,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:04:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-09-25 09:04:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 695. [2020-09-25 09:04:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:04:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 09:04:59,604 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 143 [2020-09-25 09:04:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:59,605 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 09:04:59,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 09:04:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 09:04:59,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:59,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:59,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:59,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:59,615 INFO L82 PathProgramCache]: Analyzing trace with hash 370694072, now seen corresponding path program 1 times [2020-09-25 09:04:59,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:59,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071498582] [2020-09-25 09:04:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 09:05:04,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:05:04,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 09:05:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:04,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:04,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:05:04,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:05,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:05,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 09:05:05,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 09:05:05,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:05,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:05,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:05,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 09:05:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:05,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071498582] [2020-09-25 09:05:05,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:05,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:05,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690454628] [2020-09-25 09:05:05,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:05,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:05,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:05,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:05,586 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 10 states. [2020-09-25 09:05:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:09,013 INFO L93 Difference]: Finished difference Result 1898 states and 2627 transitions. [2020-09-25 09:05:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:09,014 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-09-25 09:05:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:09,021 INFO L225 Difference]: With dead ends: 1898 [2020-09-25 09:05:09,022 INFO L226 Difference]: Without dead ends: 1194 [2020-09-25 09:05:09,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:05:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-25 09:05:09,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1000. [2020-09-25 09:05:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-09-25 09:05:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1282 transitions. [2020-09-25 09:05:09,070 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1282 transitions. Word has length 193 [2020-09-25 09:05:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:09,071 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1282 transitions. [2020-09-25 09:05:09,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1282 transitions. [2020-09-25 09:05:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 09:05:09,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:09,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:09,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:09,079 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash -709641594, now seen corresponding path program 1 times [2020-09-25 09:05:09,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:09,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937759569] [2020-09-25 09:05:09,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:14,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 09:05:14,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:14,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:05:14,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:14,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 09:05:14,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:14,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:14,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:14,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:05:14,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:14,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:14,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:14,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:14,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 09:05:14,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:14,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 09:05:14,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:14,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:14,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:05:14,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:14,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937759569] [2020-09-25 09:05:14,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:14,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:14,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436339602] [2020-09-25 09:05:14,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:14,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:14,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:14,688 INFO L87 Difference]: Start difference. First operand 1000 states and 1282 transitions. Second operand 7 states. [2020-09-25 09:05:16,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:16,976 INFO L93 Difference]: Finished difference Result 2475 states and 3418 transitions. [2020-09-25 09:05:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:16,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-09-25 09:05:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:16,997 INFO L225 Difference]: With dead ends: 2475 [2020-09-25 09:05:16,997 INFO L226 Difference]: Without dead ends: 1490 [2020-09-25 09:05:17,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2020-09-25 09:05:17,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1166. [2020-09-25 09:05:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-09-25 09:05:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1467 transitions. [2020-09-25 09:05:17,068 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1467 transitions. Word has length 200 [2020-09-25 09:05:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:17,070 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1467 transitions. [2020-09-25 09:05:17,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1467 transitions. [2020-09-25 09:05:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-09-25 09:05:17,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:17,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:17,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:17,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:17,078 INFO L82 PathProgramCache]: Analyzing trace with hash -981280704, now seen corresponding path program 1 times [2020-09-25 09:05:17,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:17,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330428796] [2020-09-25 09:05:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-09-25 09:05:22,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:05:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:22,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:05:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:22,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:22,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:05:22,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:22,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:22,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:22,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:22,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:22,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:22,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:22,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:22,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 09:05:22,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:22,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:22,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:05:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 09:05:22,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 09:05:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:22,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:05:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:23,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330428796] [2020-09-25 09:05:23,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:23,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:23,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987915350] [2020-09-25 09:05:23,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:23,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:23,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:23,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:23,083 INFO L87 Difference]: Start difference. First operand 1166 states and 1467 transitions. Second operand 8 states. [2020-09-25 09:05:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:26,466 INFO L93 Difference]: Finished difference Result 3051 states and 4057 transitions. [2020-09-25 09:05:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:05:26,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-09-25 09:05:26,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:26,482 INFO L225 Difference]: With dead ends: 3051 [2020-09-25 09:05:26,483 INFO L226 Difference]: Without dead ends: 1900 [2020-09-25 09:05:26,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:05:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-09-25 09:05:26,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1822. [2020-09-25 09:05:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1822 states. [2020-09-25 09:05:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2414 transitions. [2020-09-25 09:05:26,553 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2414 transitions. Word has length 288 [2020-09-25 09:05:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:26,554 INFO L479 AbstractCegarLoop]: Abstraction has 1822 states and 2414 transitions. [2020-09-25 09:05:26,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:05:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2414 transitions. [2020-09-25 09:05:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-25 09:05:26,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:26,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:26,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:26,563 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:26,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:26,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1276197192, now seen corresponding path program 1 times [2020-09-25 09:05:26,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:26,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444881381] [2020-09-25 09:05:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:26,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-09-25 09:05:31,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:05:31,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 09:05:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:05:31,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:31,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:31,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:31,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:05:31,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:05:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 09:05:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:05:31,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 09:05:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:32,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 09:05:32,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-25 09:05:32,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:32,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:05:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:32,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444881381] [2020-09-25 09:05:32,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:32,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:32,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097208016] [2020-09-25 09:05:32,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:32,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:32,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:32,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:32,382 INFO L87 Difference]: Start difference. First operand 1822 states and 2414 transitions. Second operand 8 states.