/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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:55,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:55,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:55,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:55,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:55,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:55,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:55,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:55,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:55,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:55,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:55,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:55,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:55,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:55,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:55,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:55,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:55,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:55,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:55,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:55,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:55,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:55,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:55,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:55,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:55,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:55,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:55,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:55,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:55,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:55,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:55,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:55,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:55,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:55,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:55,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:55,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:55,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:55,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:55,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:55,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:55,893 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 09:05:55,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:55,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:55,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:55,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:55,928 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:55,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:55,929 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:55,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:55,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:55,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:55,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:55,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:55,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:55,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:55,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:55,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:55,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:55,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:55,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:55,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:55,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:55,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:55,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:55,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:55,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:55,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:55,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:55,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:55,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:55,936 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 09:05:56,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:56,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:56,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:56,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:56,430 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:56,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 09:05:56,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8515dad/b97101949e074516a5859578b1b2a96a/FLAGc70a82726 [2020-09-25 09:05:57,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:57,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 09:05:57,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8515dad/b97101949e074516a5859578b1b2a96a/FLAGc70a82726 [2020-09-25 09:05:57,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8515dad/b97101949e074516a5859578b1b2a96a [2020-09-25 09:05:57,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:57,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:57,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:57,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:57,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:57,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57, skipping insertion in model container [2020-09-25 09:05:57,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:57,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:58,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:58,250 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:58,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:58,424 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:58,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58 WrapperNode [2020-09-25 09:05:58,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:58,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:58,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:58,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:58,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (1/1) ... [2020-09-25 09:05:58,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (1/1) ... [2020-09-25 09:05:58,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (1/1) ... [2020-09-25 09:05:58,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (1/1) ... [2020-09-25 09:05:58,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (1/1) ... [2020-09-25 09:05:58,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (1/1) ... [2020-09-25 09:05:58,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (1/1) ... [2020-09-25 09:05:58,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:58,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:58,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:58,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:58,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (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 09:05:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:00,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:00,129 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:00,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:00 BoogieIcfgContainer [2020-09-25 09:06:00,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:00,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:00,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:00,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:00,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:57" (1/3) ... [2020-09-25 09:06:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d94d252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:00, skipping insertion in model container [2020-09-25 09:06:00,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:58" (2/3) ... [2020-09-25 09:06:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d94d252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:00, skipping insertion in model container [2020-09-25 09:06:00,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:00" (3/3) ... [2020-09-25 09:06:00,149 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-25 09:06:00,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:00,175 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:00,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:00,238 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:00,238 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:00,239 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:00,239 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:00,239 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:00,239 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:00,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:00,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:06:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 09:06:00,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:00,282 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] [2020-09-25 09:06:00,282 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:00,291 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-25 09:06:00,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:00,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661304339] [2020-09-25 09:06:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:01,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 09:06:01,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:01,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-09-25 09:06:01,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:01,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 09:06:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:01,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:01,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:01,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:01,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:01,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:01,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:01,397 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 09:06:01,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661304339] [2020-09-25 09:06:01,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:01,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:01,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160934032] [2020-09-25 09:06:01,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:01,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:01,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:01,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:01,461 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:06:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:03,554 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:06:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:03,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 09:06:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:03,583 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:06:03,584 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:06:03,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 09:06:03,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:06:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:06:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:06:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:06:03,692 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-25 09:06:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:03,693 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:06:03,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:06:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 09:06:03,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:03,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:03,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:03,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-25 09:06:03,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:03,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432816961] [2020-09-25 09:06:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 09:06:08,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4554 [2020-09-25 09:06:08,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:08,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 09:06:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:08,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:08,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:08,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:08,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:08,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:08,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:08,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 09:06:08,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:08,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:06:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:08,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432816961] [2020-09-25 09:06:08,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:08,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:08,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761294142] [2020-09-25 09:06:08,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:08,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:08,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:08,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:08,813 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 7 states. [2020-09-25 09:06:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:11,284 INFO L93 Difference]: Finished difference Result 1378 states and 1768 transitions. [2020-09-25 09:06:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:06:11,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-09-25 09:06:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:11,295 INFO L225 Difference]: With dead ends: 1378 [2020-09-25 09:06:11,295 INFO L226 Difference]: Without dead ends: 849 [2020-09-25 09:06:11,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-09-25 09:06:11,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2020-09-25 09:06:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-25 09:06:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1084 transitions. [2020-09-25 09:06:11,373 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1084 transitions. Word has length 124 [2020-09-25 09:06:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:11,376 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1084 transitions. [2020-09-25 09:06:11,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1084 transitions. [2020-09-25 09:06:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 09:06:11,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:11,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:11,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:11,391 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-25 09:06:11,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:11,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362810037] [2020-09-25 09:06:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 09:06:15,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4450 [2020-09-25 09:06:15,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:06:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 09:06:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:15,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:15,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:06:15,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:15,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:15,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:15,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:15,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:16,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:16,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:16,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 09:06:16,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:16,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:16,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362810037] [2020-09-25 09:06:16,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:16,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:16,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389518270] [2020-09-25 09:06:16,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:16,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:16,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:16,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:16,202 INFO L87 Difference]: Start difference. First operand 847 states and 1084 transitions. Second operand 6 states. [2020-09-25 09:06:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:19,021 INFO L93 Difference]: Finished difference Result 2517 states and 3455 transitions. [2020-09-25 09:06:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:19,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-09-25 09:06:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:19,031 INFO L225 Difference]: With dead ends: 2517 [2020-09-25 09:06:19,032 INFO L226 Difference]: Without dead ends: 1835 [2020-09-25 09:06:19,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-09-25 09:06:19,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1629. [2020-09-25 09:06:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-09-25 09:06:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2194 transitions. [2020-09-25 09:06:19,098 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2194 transitions. Word has length 134 [2020-09-25 09:06:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:19,099 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 2194 transitions. [2020-09-25 09:06:19,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2194 transitions. [2020-09-25 09:06:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 09:06:19,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:19,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:19,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:19,105 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:19,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:19,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1117469357, now seen corresponding path program 1 times [2020-09-25 09:06:19,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:19,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766078681] [2020-09-25 09:06:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:24,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 09:06:24,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 09:06:24,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:24,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 09:06:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:24,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:24,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:24,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:06:24,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:24,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:24,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:24,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:24,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 09:06:24,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:24,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 09:06:24,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:24,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:24,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:24,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:24,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 09:06:24,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:24,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766078681] [2020-09-25 09:06:24,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:24,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:06:24,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276029466] [2020-09-25 09:06:24,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:24,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:24,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:24,714 INFO L87 Difference]: Start difference. First operand 1629 states and 2194 transitions. Second operand 8 states. [2020-09-25 09:06:27,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:27,622 INFO L93 Difference]: Finished difference Result 4975 states and 7102 transitions. [2020-09-25 09:06:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:06:27,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-09-25 09:06:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:27,644 INFO L225 Difference]: With dead ends: 4975 [2020-09-25 09:06:27,645 INFO L226 Difference]: Without dead ends: 3511 [2020-09-25 09:06:27,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:27,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2020-09-25 09:06:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 2877. [2020-09-25 09:06:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2877 states. [2020-09-25 09:06:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3706 transitions. [2020-09-25 09:06:27,770 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3706 transitions. Word has length 191 [2020-09-25 09:06:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:27,771 INFO L479 AbstractCegarLoop]: Abstraction has 2877 states and 3706 transitions. [2020-09-25 09:06:27,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3706 transitions. [2020-09-25 09:06:27,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-25 09:06:27,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:27,781 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, 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, 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] [2020-09-25 09:06:27,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:27,782 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:27,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:27,782 INFO L82 PathProgramCache]: Analyzing trace with hash -580809659, now seen corresponding path program 1 times [2020-09-25 09:06:27,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:27,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271813484] [2020-09-25 09:06:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:32,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-09-25 09:06:32,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:32,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:06:32,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:32,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 09:06:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 09:06:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:32,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:32,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:32,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:06:32,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:32,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:32,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 09:06:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:06:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 09:06:33,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 09:06:33,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 09:06:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:33,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271813484] [2020-09-25 09:06:33,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:33,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:33,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288026742] [2020-09-25 09:06:33,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:33,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:33,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:33,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:33,725 INFO L87 Difference]: Start difference. First operand 2877 states and 3706 transitions. Second operand 7 states. [2020-09-25 09:06:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:36,567 INFO L93 Difference]: Finished difference Result 6955 states and 9155 transitions. [2020-09-25 09:06:36,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:06:36,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-09-25 09:06:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:36,598 INFO L225 Difference]: With dead ends: 6955 [2020-09-25 09:06:36,599 INFO L226 Difference]: Without dead ends: 3601 [2020-09-25 09:06:36,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:06:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2020-09-25 09:06:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 2999. [2020-09-25 09:06:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-09-25 09:06:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3749 transitions. [2020-09-25 09:06:36,723 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3749 transitions. Word has length 285 [2020-09-25 09:06:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:36,723 INFO L479 AbstractCegarLoop]: Abstraction has 2999 states and 3749 transitions. [2020-09-25 09:06:36,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3749 transitions. [2020-09-25 09:06:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-25 09:06:36,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:36,735 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, 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, 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] [2020-09-25 09:06:36,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:36,735 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:36,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:36,736 INFO L82 PathProgramCache]: Analyzing trace with hash 662556502, now seen corresponding path program 1 times [2020-09-25 09:06:36,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:36,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859969117] [2020-09-25 09:06:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:41,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:41,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-09-25 09:06:41,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:06:41,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:41,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 293 [2020-09-25 09:06:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:06:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:41,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:41,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:41,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:06:41,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:41,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:41,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 09:06:42,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:06:42,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:42,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:42,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 09:06:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 09:06:42,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:42,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 09:06:42,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:06:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-09-25 09:06:42,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859969117] [2020-09-25 09:06:42,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:42,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:06:42,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456372640] [2020-09-25 09:06:42,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:06:42,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:42,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:06:42,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:42,310 INFO L87 Difference]: Start difference. First operand 2999 states and 3749 transitions. Second operand 5 states. [2020-09-25 09:06:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:43,885 INFO L93 Difference]: Finished difference Result 6455 states and 8171 transitions. [2020-09-25 09:06:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:06:43,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-09-25 09:06:43,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:43,902 INFO L225 Difference]: With dead ends: 6455 [2020-09-25 09:06:43,903 INFO L226 Difference]: Without dead ends: 3465 [2020-09-25 09:06:43,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2020-09-25 09:06:43,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3001. [2020-09-25 09:06:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3001 states. [2020-09-25 09:06:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3698 transitions. [2020-09-25 09:06:43,990 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3698 transitions. Word has length 320 [2020-09-25 09:06:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:43,990 INFO L479 AbstractCegarLoop]: Abstraction has 3001 states and 3698 transitions. [2020-09-25 09:06:43,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:06:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3698 transitions. [2020-09-25 09:06:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-25 09:06:44,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:44,003 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, 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, 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, 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] [2020-09-25 09:06:44,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:44,004 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:44,004 INFO L82 PathProgramCache]: Analyzing trace with hash 13685986, now seen corresponding path program 1 times [2020-09-25 09:06:44,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:44,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542026281] [2020-09-25 09:06:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking...