/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=0.6 --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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:51,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:51,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:51,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:51,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:51,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:51,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:51,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:51,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:51,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:51,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:51,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:51,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:51,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:51,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:51,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:51,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:51,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:51,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:51,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:51,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:51,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:51,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:51,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:51,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:51,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:51,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:51,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:51,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:51,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-25 06:47:51,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:51,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:51,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:51,917 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 06:47:51,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:51,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:51,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:51,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:51,964 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:51,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:51,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:51,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:51,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:51,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:51,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:51,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:51,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:51,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:51,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:51,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:51,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:51,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:51,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:51,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:51,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:51,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:51,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:51,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:51,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:51,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:51,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:51,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:51,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:51,971 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:47:52,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:52,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:52,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:52,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:52,430 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:52,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 06:47:52,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb142f0f8/75766312820c40be805f909489e6cd69/FLAGc15e0538c [2020-09-25 06:47:53,182 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:53,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 06:47:53,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb142f0f8/75766312820c40be805f909489e6cd69/FLAGc15e0538c [2020-09-25 06:47:53,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb142f0f8/75766312820c40be805f909489e6cd69 [2020-09-25 06:47:53,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:53,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:53,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:53,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:53,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:53,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e50e298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53, skipping insertion in model container [2020-09-25 06:47:53,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:53,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:54,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:54,172 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:54,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:54,307 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:54,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54 WrapperNode [2020-09-25 06:47:54,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:54,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:54,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:54,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:54,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (1/1) ... [2020-09-25 06:47:54,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (1/1) ... [2020-09-25 06:47:54,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (1/1) ... [2020-09-25 06:47:54,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (1/1) ... [2020-09-25 06:47:54,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (1/1) ... [2020-09-25 06:47:54,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (1/1) ... [2020-09-25 06:47:54,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (1/1) ... [2020-09-25 06:47:54,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:54,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:54,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:54,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:54,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (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 06:47:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:55,855 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:55,856 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:55,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:55 BoogieIcfgContainer [2020-09-25 06:47:55,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:55,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:55,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:55,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:55,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:53" (1/3) ... [2020-09-25 06:47:55,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c160ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:55, skipping insertion in model container [2020-09-25 06:47:55,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:54" (2/3) ... [2020-09-25 06:47:55,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c160ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:55, skipping insertion in model container [2020-09-25 06:47:55,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:55" (3/3) ... [2020-09-25 06:47:55,874 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 06:47:55,885 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:55,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:55,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:55,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:55,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:55,952 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:55,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:55,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:55,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:55,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:55,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:55,986 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 06:47:55,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:56,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:56,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:56,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:56,012 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 06:47:56,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:56,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144898775] [2020-09-25 06:47:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:47:57,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-09-25 06:47:57,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 06:47:57,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:57,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:57,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:47:57,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:57,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,454 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 06:47:57,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144898775] [2020-09-25 06:47:57,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:57,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:57,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812152293] [2020-09-25 06:47:57,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:57,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:57,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:57,486 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:59,469 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 06:47:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:59,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 06:47:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:59,509 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 06:47:59,509 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 06:47:59,523 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 06:47:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 06:47:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 06:47:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 06:47:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 06:47:59,619 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 73 [2020-09-25 06:47:59,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:59,620 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 06:47:59,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 06:47:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 06:47:59,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:59,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:47:59,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:59,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:59,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:59,631 INFO L82 PathProgramCache]: Analyzing trace with hash 975789152, now seen corresponding path program 1 times [2020-09-25 06:47:59,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:59,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089525725] [2020-09-25 06:47:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:59,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:04,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:04,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 06:48:04,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:48:04,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 06:48:04,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:04,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:48:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:48:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:48:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:04,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:48:04,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:04,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:04,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:04,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:04,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:04,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 06:48:04,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:04,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:48:04,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:05,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089525725] [2020-09-25 06:48:05,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:05,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:48:05,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784969414] [2020-09-25 06:48:05,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:48:05,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:05,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:48:05,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:05,033 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 06:48:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:06,748 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 06:48:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:48:06,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 06:48:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:06,760 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 06:48:06,761 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 06:48:06,764 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 06:48:06,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 06:48:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 06:48:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 06:48:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 06:48:06,813 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 152 [2020-09-25 06:48:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:06,816 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 06:48:06,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 06:48:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 06:48:06,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:06,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:06,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:48:06,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:06,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:06,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 06:48:06,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:06,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136601870] [2020-09-25 06:48:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:11,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:48:11,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:48:11,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:48:11,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:11,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:48:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 06:48:11,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:48:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:12,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:12,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:12,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:12,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:12,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:12,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:48:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:12,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:12,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:12,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 06:48:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:12,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:48:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:12,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136601870] [2020-09-25 06:48:12,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:12,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:48:12,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875120708] [2020-09-25 06:48:12,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:48:12,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:12,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:48:12,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:48:12,357 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 06:48:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:15,001 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 06:48:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:48:15,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-25 06:48:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:15,010 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 06:48:15,010 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 06:48:15,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 06:48:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 06:48:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 06:48:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2020-09-25 06:48:15,054 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 162 [2020-09-25 06:48:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:15,054 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2020-09-25 06:48:15,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:48:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2020-09-25 06:48:15,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 06:48:15,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:15,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:48:15,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:48:15,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:15,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:15,058 INFO L82 PathProgramCache]: Analyzing trace with hash -86422342, now seen corresponding path program 1 times [2020-09-25 06:48:15,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:15,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555106597] [2020-09-25 06:48:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:15,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:17,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 06:48:17,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:17,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2784 [2020-09-25 06:48:17,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:17,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:48:17,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:17,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:17,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:17,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:48:17,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:17,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:17,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:18,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:18,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:48:18,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:18,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 06:48:18,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:18,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:18,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:18,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:18,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555106597] [2020-09-25 06:48:18,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:18,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:48:18,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729792940] [2020-09-25 06:48:18,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:18,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:18,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:18,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:18,308 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand 8 states. [2020-09-25 06:48:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:21,186 INFO L93 Difference]: Finished difference Result 4211 states and 5818 transitions. [2020-09-25 06:48:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:48:21,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 164 [2020-09-25 06:48:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:21,210 INFO L225 Difference]: With dead ends: 4211 [2020-09-25 06:48:21,210 INFO L226 Difference]: Without dead ends: 3057 [2020-09-25 06:48:21,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:48:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2020-09-25 06:48:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2723. [2020-09-25 06:48:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2723 states. [2020-09-25 06:48:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3522 transitions. [2020-09-25 06:48:21,313 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3522 transitions. Word has length 164 [2020-09-25 06:48:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:21,313 INFO L479 AbstractCegarLoop]: Abstraction has 2723 states and 3522 transitions. [2020-09-25 06:48:21,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:48:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3522 transitions. [2020-09-25 06:48:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 06:48:21,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:21,321 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:21,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:48:21,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:21,322 INFO L82 PathProgramCache]: Analyzing trace with hash 383410675, now seen corresponding path program 1 times [2020-09-25 06:48:21,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:21,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369744733] [2020-09-25 06:48:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:21,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:26,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 06:48:26,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:48:26,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:26,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:48:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 06:48:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:26,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:26,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:26,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:26,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:26,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:26,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 06:48:26,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:26,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:48:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:26,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:48:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:26,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:48:26,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 06:48:26,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:26,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:48:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:27,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369744733] [2020-09-25 06:48:27,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:27,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:48:27,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692025507] [2020-09-25 06:48:27,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:48:27,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:27,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:48:27,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:48:27,197 INFO L87 Difference]: Start difference. First operand 2723 states and 3522 transitions. Second operand 9 states. [2020-09-25 06:48:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:31,450 INFO L93 Difference]: Finished difference Result 7373 states and 10006 transitions. [2020-09-25 06:48:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:48:31,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 244 [2020-09-25 06:48:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:31,479 INFO L225 Difference]: With dead ends: 7373 [2020-09-25 06:48:31,480 INFO L226 Difference]: Without dead ends: 4815 [2020-09-25 06:48:31,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:48:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states. [2020-09-25 06:48:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 4287. [2020-09-25 06:48:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4287 states. [2020-09-25 06:48:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 5677 transitions. [2020-09-25 06:48:31,647 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 5677 transitions. Word has length 244 [2020-09-25 06:48:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:31,647 INFO L479 AbstractCegarLoop]: Abstraction has 4287 states and 5677 transitions. [2020-09-25 06:48:31,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:48:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 5677 transitions. [2020-09-25 06:48:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 06:48:31,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:31,654 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:31,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:31,655 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:31,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1248338468, now seen corresponding path program 1 times [2020-09-25 06:48:31,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:31,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36722835] [2020-09-25 06:48:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:36,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 06:48:36,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:48:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:48:36,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:36,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:48:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:48:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:36,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:36,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:36,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:36,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:36,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:36,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:36,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 06:48:36,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:36,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:37,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:37,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:37,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:37,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 06:48:37,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:37,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:37,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:37,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36722835] [2020-09-25 06:48:37,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:37,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:48:37,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326756344] [2020-09-25 06:48:37,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:37,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:37,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:37,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:37,359 INFO L87 Difference]: Start difference. First operand 4287 states and 5677 transitions. Second operand 7 states.