/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:26,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:26,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:26,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:26,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:26,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:26,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:26,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:26,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:26,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:26,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:26,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:26,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:26,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:26,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:26,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:26,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:26,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:26,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:26,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:26,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:26,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:26,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:26,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:26,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:26,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:26,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:26,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:26,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:26,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:26,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:26,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:26,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:26,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:26,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:26,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:26,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:26,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:26,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:26,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:26,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:26,890 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 07:55:26,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:26,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:26,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:26,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:26,954 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:26,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:26,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:26,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:26,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:26,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:26,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:26,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:26,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:26,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:26,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:26,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:26,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:26,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:26,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:26,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:26,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:26,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:26,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:26,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:26,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:26,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:26,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:26,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:26,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:26,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:55:27,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:27,462 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:27,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:27,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:27,468 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:27,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 07:55:27,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14df7c52b/dc9d9e301e644980864ecfeb3fe2afdc/FLAG896646090 [2020-09-25 07:55:28,234 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:28,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 07:55:28,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14df7c52b/dc9d9e301e644980864ecfeb3fe2afdc/FLAG896646090 [2020-09-25 07:55:28,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14df7c52b/dc9d9e301e644980864ecfeb3fe2afdc [2020-09-25 07:55:28,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:28,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:28,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:28,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:28,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:28,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:28" (1/1) ... [2020-09-25 07:55:28,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:28, skipping insertion in model container [2020-09-25 07:55:28,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:28" (1/1) ... [2020-09-25 07:55:28,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:28,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:29,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:29,250 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:29,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:29,370 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:29,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29 WrapperNode [2020-09-25 07:55:29,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:29,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:29,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:29,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:29,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (1/1) ... [2020-09-25 07:55:29,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (1/1) ... [2020-09-25 07:55:29,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (1/1) ... [2020-09-25 07:55:29,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (1/1) ... [2020-09-25 07:55:29,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (1/1) ... [2020-09-25 07:55:29,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (1/1) ... [2020-09-25 07:55:29,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (1/1) ... [2020-09-25 07:55:29,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:29,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:29,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:29,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:29,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (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 07:55:29,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:29,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:29,577 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:29,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:31,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:31,078 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:31,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:31 BoogieIcfgContainer [2020-09-25 07:55:31,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:31,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:31,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:31,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:31,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:28" (1/3) ... [2020-09-25 07:55:31,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:31, skipping insertion in model container [2020-09-25 07:55:31,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:29" (2/3) ... [2020-09-25 07:55:31,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:31, skipping insertion in model container [2020-09-25 07:55:31,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:31" (3/3) ... [2020-09-25 07:55:31,096 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 07:55:31,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:31,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:31,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:31,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:31,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:31,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:31,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:31,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:31,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:31,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:31,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:55:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 07:55:31,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:31,221 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] [2020-09-25 07:55:31,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:31,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 07:55:31,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:31,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 07:55:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:31,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:32,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:32,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 07:55:32,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:55:32,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-09-25 07:55:32,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:32,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:55:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 07:55:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:55:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:32,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:32,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:32,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:32,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:55:32,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:32,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:55:32,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:32,877 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 07:55:32,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 07:55:32,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:32,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:55:32,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944901132] [2020-09-25 07:55:32,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:32,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:32,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:32,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:32,915 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 07:55:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:36,374 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 07:55:36,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:55:36,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-09-25 07:55:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:36,406 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 07:55:36,406 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 07:55:36,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 07:55:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 07:55:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 07:55:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 07:55:36,526 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 55 [2020-09-25 07:55:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:36,527 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 07:55:36,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 07:55:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 07:55:36,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:36,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:36,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:36,536 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:36,537 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 07:55:36,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:36,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837671007] [2020-09-25 07:55:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:39,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 07:55:39,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2994 [2020-09-25 07:55:39,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:39,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:55:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:55:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:39,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:39,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:39,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:55:39,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:39,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:39,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:39,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:55:39,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:39,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:55:39,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:39,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:55:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:39,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837671007] [2020-09-25 07:55:39,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:39,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:39,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557196761] [2020-09-25 07:55:39,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:39,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:39,849 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 5 states. [2020-09-25 07:55:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:41,586 INFO L93 Difference]: Finished difference Result 1762 states and 2316 transitions. [2020-09-25 07:55:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:41,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 07:55:41,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:41,596 INFO L225 Difference]: With dead ends: 1762 [2020-09-25 07:55:41,596 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 07:55:41,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 07:55:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 07:55:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-09-25 07:55:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 07:55:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1333 transitions. [2020-09-25 07:55:41,667 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1333 transitions. Word has length 134 [2020-09-25 07:55:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:41,668 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1333 transitions. [2020-09-25 07:55:41,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1333 transitions. [2020-09-25 07:55:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 07:55:41,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:41,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:41,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:41,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:41,678 INFO L82 PathProgramCache]: Analyzing trace with hash -58375918, now seen corresponding path program 1 times [2020-09-25 07:55:41,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:41,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251219688] [2020-09-25 07:55:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:44,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:44,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 07:55:44,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:55:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2315 [2020-09-25 07:55:44,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:44,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:55:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:55:44,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:44,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:44,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:44,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:44,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:44,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:55:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:44,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:44,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:44,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:55:44,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 07:55:44,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:44,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:55:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:44,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251219688] [2020-09-25 07:55:44,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:44,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:55:44,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202177888] [2020-09-25 07:55:44,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:44,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:44,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:44,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:44,493 INFO L87 Difference]: Start difference. First operand 1039 states and 1333 transitions. Second operand 8 states. [2020-09-25 07:55:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:47,189 INFO L93 Difference]: Finished difference Result 3170 states and 4391 transitions. [2020-09-25 07:55:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:55:47,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 07:55:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:47,203 INFO L225 Difference]: With dead ends: 3170 [2020-09-25 07:55:47,203 INFO L226 Difference]: Without dead ends: 2296 [2020-09-25 07:55:47,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:55:47,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2020-09-25 07:55:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2272. [2020-09-25 07:55:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2272 states. [2020-09-25 07:55:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 2900 transitions. [2020-09-25 07:55:47,296 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 2900 transitions. Word has length 146 [2020-09-25 07:55:47,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:47,297 INFO L479 AbstractCegarLoop]: Abstraction has 2272 states and 2900 transitions. [2020-09-25 07:55:47,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 2900 transitions. [2020-09-25 07:55:47,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 07:55:47,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:47,311 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:55:47,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:47,312 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:47,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:47,312 INFO L82 PathProgramCache]: Analyzing trace with hash -442827895, now seen corresponding path program 1 times [2020-09-25 07:55:47,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:47,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001459688] [2020-09-25 07:55:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:52,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:52,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 07:55:52,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:52,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 07:55:52,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:52,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:55:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:55:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:52,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:52,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:52,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:55:52,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:52,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:52,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:52,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:55:52,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 07:55:52,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:52,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:55:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:55:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:55:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:52,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:52,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:55:52,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 07:55:52,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:52,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:52,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:52,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:52,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:55:52,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:55:53,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001459688] [2020-09-25 07:55:53,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:53,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:53,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498192122] [2020-09-25 07:55:53,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:53,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:53,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:53,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:53,092 INFO L87 Difference]: Start difference. First operand 2272 states and 2900 transitions. Second operand 8 states. [2020-09-25 07:55:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:56,813 INFO L93 Difference]: Finished difference Result 6615 states and 9054 transitions. [2020-09-25 07:55:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:55:56,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-25 07:55:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:56,858 INFO L225 Difference]: With dead ends: 6615 [2020-09-25 07:55:56,858 INFO L226 Difference]: Without dead ends: 4508 [2020-09-25 07:55:56,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:55:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2020-09-25 07:55:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 4311. [2020-09-25 07:55:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-09-25 07:55:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 5801 transitions. [2020-09-25 07:55:57,258 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 5801 transitions. Word has length 223 [2020-09-25 07:55:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:57,260 INFO L479 AbstractCegarLoop]: Abstraction has 4311 states and 5801 transitions. [2020-09-25 07:55:57,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 5801 transitions. [2020-09-25 07:55:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 07:55:57,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:57,273 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:55:57,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:57,274 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:57,275 INFO L82 PathProgramCache]: Analyzing trace with hash 373108045, now seen corresponding path program 1 times [2020-09-25 07:55:57,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:57,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331064845] [2020-09-25 07:55:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:57,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:57,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:02,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 07:56:02,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:56:02,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:02,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 07:56:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:56:02,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:56:02,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:02,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:02,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:02,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 07:56:02,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:02,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:56:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:56:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:02,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 07:56:02,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 07:56:02,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:02,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 07:56:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:03,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331064845] [2020-09-25 07:56:03,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:03,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:03,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686646649] [2020-09-25 07:56:03,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:03,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:03,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:03,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:03,095 INFO L87 Difference]: Start difference. First operand 4311 states and 5801 transitions. Second operand 8 states. [2020-09-25 07:56:05,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:05,947 INFO L93 Difference]: Finished difference Result 10001 states and 13726 transitions. [2020-09-25 07:56:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:56:05,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 07:56:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:05,984 INFO L225 Difference]: With dead ends: 10001 [2020-09-25 07:56:05,985 INFO L226 Difference]: Without dead ends: 5855 [2020-09-25 07:56:06,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2020-09-25 07:56:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 5531. [2020-09-25 07:56:06,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-09-25 07:56:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 7164 transitions. [2020-09-25 07:56:06,209 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 7164 transitions. Word has length 236 [2020-09-25 07:56:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:06,210 INFO L479 AbstractCegarLoop]: Abstraction has 5531 states and 7164 transitions. [2020-09-25 07:56:06,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 7164 transitions. [2020-09-25 07:56:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 07:56:06,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:06,219 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:06,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:06,220 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:06,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1838480665, now seen corresponding path program 1 times [2020-09-25 07:56:06,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:06,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375564992] [2020-09-25 07:56:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:06,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:11,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 07:56:11,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:56:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:56:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:11,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:56:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:56:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:11,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:11,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:11,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:11,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:11,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:11,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:11,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:11,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:11,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:11,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:11,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 07:56:11,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:11,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:56:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:11,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:56:11,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 07:56:11,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:11,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:56:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:11,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375564992] [2020-09-25 07:56:11,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:11,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:56:11,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604589090] [2020-09-25 07:56:11,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:11,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:11,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:11,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:11,934 INFO L87 Difference]: Start difference. First operand 5531 states and 7164 transitions. Second operand 7 states.